Spectrum ICSE Class 10 Physics Deviation Produced by a Triangular Prism • When a ray of light passes from one medium to another medium, it gets deviated from its path because of the difference in speeds of light in the two media.
Where to find ICSE solutions for Class 10 physics chapter 5 spectrum?
APlusTopper.com provides ICSE Solutions for Class 10 Physics Chapter 5 Spectrum for ICSE Board Examinations. We provide step by step Solutions for ICSE Physics Class 10 Solutions Pdf.
What is a spectrum in physics?
Whether it is physics or chemistry, the spectrum definition is the same - when white light is passed through a prism or any other dispersing substance, the white light splits into a series of coloured bands or lines known as a spectrum.
What is deviation in physics class 10?
ICSE Revision Notes for Spectrum Class 10 Physics Deviation Produced by a Triangular Prism When a ray of light passes from one medium to another medium, it gets deviated from its path because of the difference in speeds of light in the two media. The deviation produced by a triangular prism is shown below.
What are the topics in the chapter on light spectrum?
This chapter includes topics such as deviation produced by a triangular prism, colours in white light with their wavelength and frequency range, dispersion of white light through a prism and formation of a spectrum. In order to obtain an in-depth understanding of the chapter, students are advised to practise Selina Solutions regularly.
What is spectrum in which chapter?
Selina Solutions Concise Physics Class 10 Chapter 6 Spectrum explains the concept Spectrum relevant to the ICSE. Students who aspire to score well in the board exam can solve the textbook questions by going through Selina Solutions.
What do you understand by the term spectrum?
The spectrum is the band of different colours which is produced when light passes through a glass prism. Physics.
What is a spectrum Class 8 science?
Answer: The term spectrum refers to the order and arrangement of different colours of light constituting the white light. A glass splits white light into its constituent colours because different colours of light have different angles of deviation.
What is dispersion class 10 science?
When white light is passed through a glass prism it splits into its spectrum of colours (in order violet, indigo, blue, green, yellow, orange and red) and this process of white light splitting into its constituent colours is termed as dispersion.
What is spectrum and its types?
A spectrum is defined as the characteristic wavelengths of electromagnetic radiation (or a portion thereof) that is emitted or absorbed by an object or substance, atom, or molecule. Examples of a spectrum include the rainbow, the emission colors from the Sun, and the infrared absorption wavelengths from a molecule.
What is spectrum and how it is formed?
Solution. When white light passes through a glass prism, it spreads out into a band of different colours called the spectrum of light. When white light is dispersed into seven colours by a glass prism, different colours bend through different angles with respect to the incident ray.
What is a spectrum Class 7?
Answer: The band of seven colors obtained, when a white light splits into its constituent colors on striking the surface of glass prism is called as a spectrum.
What is a spectrum of light answer?
Spectrum is the band of colours obtained on a screen when white light passes through a prism and splits into its constituent colours. The colours of the spectrum are violet (V), indigo (1), blue (B), green (G), yellow (Y), orange (O), and red (R). The order of the spectrum is VIBGYOR.
Is color a spectrum?
That is the reason; this region of the electromagnetic spectrum is called a visible spectrum or colour spectrum. It consists of 7 colour mainly; violet, blue, green, yellow, orange, and red. Violet colour has the shortest wavelength and red has the longest wavelength value.
What is spectrum of white light?
The spectrum of white light consists of six basic colours arranged in a specific order: red, orange, yellow, green, blue and violet. Although Newton understood that a beam of light of a particular colour is always deviated by the same amount, he did not appear to understand why this is so.
What is twinkling of stars Class 10?
The twinkling of stars occurs due to atmospheric refraction of star's light. The Optical Density of Air varies continuously in the different layers of the atmosphere. Due to the varying optical densities of air, starlight is refracted multiple times through the atmosphere before it reaches our eyes.
What is dispersion in physics?
dispersion, in wave motion, any phenomenon associated with the propagation of individual waves at speeds that depend on their wavelengths.
Why don't NASA and other space programs use gamma rays, and not radio waves to transfer signals?
Gamma rays can easily pass through clouds and are not blocked by clouds. Since radio waves have less energy than gamma rays, it's more likely for r...
A good absorber is also a good emitter: True or False?
True. Dark matter substances are good at both emitting and absorbing radiation.
What 2 properties are common to all types of electromagnetic radiation?
1. They travel at the speed of light. 2. They can travel across a vacuum.
What is the connection between emission and absorption spectrum?
Emission lines refer to the radiation emitted by a glowing hot gas, whereas absorption lines are obtained when cool atmospheric gas absorbs the sam...
What is meant by Spectrum in physics and chemistry?
Whether it is physics or chemistry, the meaning of spectrum remains the same. It is the band of colours obtained on a screen when white light is al...
Deviation Produced by a Triangular Prism
When a ray of light passes from one medium to another medium, it gets deviated from its path because of the difference in speeds of light in the two media.
Dispersion and Spectrum
The phenomenon of splitting of white light by a prism into its constituent colours is known as dispersion.
Electromagnetic Spectrum
The portion of the spectrum between red and violet colours is the visible spectrum, and it is only a small part of the entire electromagnetic spectrum.
What are the seven colors of the spectrum?
Solution: (a) Violet, Indigo, Blue, Green, Yellow, Orange and Red are the seven colours of the spectrum. (b) No, different colours have different width in the spectrum. (c) (i) The colour which deviated the most is violet and. (ii) The colour which deviated the least is red.
What is the wavelength of ultraviolet radiation?
Ultraviolet radiations are electromagnetic radiations of wavelength from 100 to 4000. Detection: If silver chloride solution is exposed to the electromagnetic waves starting from the red to the violet end and then beyond it. From the red end to the violet end it is observed that the solution remains almost unaffected.
What is the phenomenon of light spreading in all directions?
This phenomenon is called the scattering of light.
When white light enters the first surface of a prism, what happens?
Thus at the first surface of the prism, the dispersion of white light into its constituent colours takes place.
Is the intensity of scattered light proportional to the wavelength?
The intensity of scattered light is found to be inversely proportional to the fourth power of the wavelength. This relation holds when the air molecules is smaller in size than the wavelength of incident light.
What is a spectrum with each colour distinct and independent called?
On the other hand, a spectrum with each colour distinct and independent is called a pure spectrum. Question 27: Give one use electromagnetic radiations in Microwaves. Answer: Microwaves are used for communication. Question 28: Give one use electromagnetic radiations in Ultraviolet radiation.
What are the three conditions necessary to obtain a pure spectrum on a screen?
Answer: The three conditions necessary to obtain a pure spectrum on a screen are: (i) A narrow parallel beam of light should be made incident on the prism. (ii) The prism should be placed in the position of minimum deviation. (iii) The emergent parallel beam should be focussed on the screen.
Why is the refractive index of material of prism different for different colours of light?
The refractive index of material of prism is different for different colours of light because the speed of different colours is different inside the prism. Thus, the light of different colours is deviated through different angles, by a prism. Question 2: Which colour of white light is deviated most.
What is the refractive index of glass?
Referective index of glass = speed of light in air/speed of light in glass, so the refractive index of glass (the material of prism) is most for violet light and least for red light. Hence, the violet light is deviated most and red light is deviated least.
Which electromagnetic wave has a higher frequency than violet light?
Answer: The two electromagnetic waves and their uses having frequency higher than that of violet light is: X-rays: X-rays are very extensively used for medical purposes, e.g., in surgery to detect bone fractures by studying X-rays photographs. Gamma rays: Gamma radiations are used in the cure of cancer.
When any ray of white light is incident on a glass prism, it simply disperses it into
Question 1: Comment on the statement: ‘When any ray of white light is incident on a glass prism, it simply disperses it into its seven constituent colours.#N#Answer : Before making any comment, the following simple experiment should be performed.#N#Arrangement is shown in the diagram. P 1 and P 2 are two glass prisms exactly similar and placed at some distance from each of the such that their refracting surfaces are parallel to each other and the base of the prism P 2 is upwards and vertex downwards. S is a narrow slit through which a ray of white light is incident on the refracting face of the prism P 1. It is dispersed by it into its seven constituent colours.#N#When this dispersed light falls on the refracting surface of the prism P 2, having its base upwards so that the rays are deviated in a direction different from the first, we see on the screen only a white spot of light. It is evident that the second prism P 2 recombines these colours to form white light acting as a ‘recombination prism’ while the first prism acts as a ‘dispersing prism’.
What is the term for a spectrum that overlaps?
Answer: A spectrum in which there is overlapping of different colours is called an impure Spectrum. In other words, in an impure spectrum, the colours are not distinct and independent but they overlap. On the other hand, a spectrum with each colour distinct and independent is called a pure spectrum.
What is the term for the arrangement of wavelengths of visible, ultraviolet, and infrared light?
Full Article. Spectrum, in optics, the arrangement according to wavelength of visible, ultraviolet, and infrared light. An instrument designed for visual observation of spectra is called a spectroscope; an instrument that photographs or maps spectra is a spectrograph.
Why is the spectrum of incandescent solids continuous?
The spectrum of incandescent solids is said to be continuous because all wavelengths are present. The spectrum of incandescent gases, on the other hand, is called a line spectrum because only a few wavelengths are emitted. These wavelengths appear to be a series of parallel lines because a slit is used as the light-imaging device.
What is band spectra?
Band spectra is the name given to groups of lines so closely spaced that each group appears to be a band, e.g., nitrogen spectrum. Band spectra, or molecular spectra, are produced by molecules radiating their rotational or vibrational energies, or both simultaneously. Britannica Quiz. More Art and Colors Quiz.
What is the emission spectrum?
What is Emission Spectrum? Whenever electromagnetic radiations interact with atoms and molecules of matter, the electrons in these atoms may absorb energy and jump to a higher energy state, losing their stability.
What is the hydrogen spectrum?
The hydrogen spectrum is an important piece of evidence showing that the electronic structure of the atom is quantized. When an electric discharge is passed through a gaseous hydrogen molecule, the hydrogen atoms in the molecule dissociate. This leads to the emission of electromagnetic radiation by the energetically excited hydrogen atoms.
What is the name of the line in the electromagnetic spectrum that lies in the visible region?
This series of the hydrogen emission spectrum is known as the Balmer series . This is the only series of the line in the electromagnetic spectrum that lies in the visible region. The term R H is called the Rydberg constant for hydrogen.
What is the spectrum of electromagnetic radiation emitted by electrons in the excited atoms or molecules?
This spectrum of radiation emitted by electrons in the excited atoms or molecules is known as the emission spectrum. It can be defined as: The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted due to an atom or molecule making a transition from a high energy state ...
What is the spectrum of violet?
This kind of spectrum is called continuous spectrum as violet merges into blue, blue into green and so on. However, the emission spectrum of atoms in the gas phase, do not exhibit a continuous spread of wavelength from one colour to another. Rather, the emitted light consists of a specific wavelength having dark spaces existing between them.
What is the study of the emission spectrum or absorption spectrum?
Each element has its unique line emission spectrum. The study of the emission spectrum or absorption spectrum is better known as spectroscopy.
Which part of the hydrogen emission spectrum is responsible for the excitation of an electron from the second shell to any other shell
The Balmer series is basically the part of the hydrogen emission spectrum which is responsible for the excitation of an electron from the second shell to any other shell. Similarly, other transitions have their own series names. Some of them are listed below, The transition from the first shell to any other shell – Lyman series.
What is the spectrum obtained when electromagnetic radiations are passed through a substance?
An absorption spectrum is defined as the spectrum obtained when electromagnetic radiations are passed through a substance; a part of the radiation is absorbed by the material, and the rest is transmitted. An emission spectrum is defined as the spectrum observed when electromagnetic radiations are given off by a substance.
What is the emission spectrum of a spectroscope?
Now let's define the line emission spectrum: a spectroscope splits the emitted light into different wavelengths and gives a discontinuous spectrum in the form of discrete lines known as a line spectrum. An example of an emission spectrum is when copper is heated on a flame, and the flame gets green color.
What is emission spectrum?
Whether it is physics or chemistry, the spectrum definition is the same - when white light is passed through a prism or any other dispersing substance, the white light splits into a series of coloured bands or lines known as a spectrum. The different constituent wavelengths of white light are arranged in the spectrum in a specific order, starting with the longest wavelength (red) and shading through to the shortest (violet).
Why do atoms have absorption spectrums?
When an atom gives an absorption spectrum, it is because it has gained a higher energy level. In contrast, an emission spectrum results when an atom falls back to a lower level from an excited state with the release of energy. Absorption spectrums account for the wavelengths that a substance absorbs.
Why do electrons have different wavelengths?
Due to the availability of multiple states of energy, an electron can undergo numerous transitions, each giving rise to a unique wavelength that comprises the emission spectrum.
What happens when electromagnetic radiation passes through a material?
When electromagnetic radiation passes through a material, a part of the electromagnetic radiation may be absorbed. In that case, when the remaining radiation is passed through a prism, a spectrum is obtained with a gap in it, called an absorption spectrum. The absorption spectrum is characteristic of a particular element or compound ...
What is the absorption of radiation?
Absorption spectroscopy studies radiation absorbed at various wavelengths. When electromagnetic radiation passes through a sample, most of it passes through the sample without loss in intensity. At specific wavelengths, however, the radiation's energy is attenuated; this is known as absorption.
What is the EM spectrum?
Introduction to Electromagnetic Spectrum. EM is a short-form that stands for the electromagnetic spectrum. The possibility of the appearance of electromagnetic waves is when both an electric field and a magnetic field come close. Some physicists explain that electromagnetic waves are the collection of oscillating magnetic and electric fields.
What happens to the electromagnetic spectrum when a charged particle is in motion?
Note: The formation of electromagnetic waves is quite interesting. When a charged particle is in motion, it produces a magnetic field around its perimeter. The magnetic field direction varies with the types of charges.
What is the wavelength of visible light?
The wavelength of the electromagnetic wave is equal to λ = c/f. ~400 nm to ~700 nm is the wavelength of visible light whereas ~400 nm is the wavelength of violet light. Its frequency is ~7.5*1014 Hz. In the full electromagnetic spectrum, visible light has a small part.
What are electromagnetic waves?
Some physicists explain that electromagnetic waves are the collection of oscillating magnetic and electric fields. You can find solutions to electromagnetic waves if you analyze Maxwell’s equations. They are called the fundamental equations of electrodynamics.
What type of energy is a type of energy that passes and spreads out to certain areas until the energy level falls
Radiation is a type of energy that passes and spreads out to certain areas until the energy level falls to zero. For example, visible light. Let’s consider the light coming out of a candle has a certain amount of electromagnetic radiation. Also, radio waves that travel to the sky have some amount of electromagnetic radiation .
Which color has the highest energy?
Ans: It is violet which has a peak frequency value. You can find this colour in visible light. Also, it has the highest energy. On the other hand, red has finished at the bottom in the frequency value. Also, red has the least amount of energy.
Who verified that a wave had a speed of visible light?
In 1888, Heinrich Hertz had verified a wave that had a speed of visible light. They are called radio waves in the present. The electromagnetic spectrum is responsible for measuring reflection, diffraction, refraction, and polarization.