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UPSC Exam  >  UPSC Tests  >  Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - UPSC MCQ

Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - UPSC MCQ


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10 Questions MCQ Test - Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity

Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity for UPSC 2024 is part of UPSC preparation. The Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity questions and answers have been prepared according to the UPSC exam syllabus.The Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity MCQs are made for UPSC 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity below.
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Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 1
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What is the phenomenon that occurs when a narrow beam of white light passes through a glass prism?

Detailed Solution for Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 1
Dispersion is the phenomenon that occurs when a narrow beam of white light passes through a glass prism. It results in the splitting of white light into its constituent colors due to the different speeds of each color of light in the medium. This creates a spectrum of colors.
Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 2
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Which color of light is scattered the most in the Earth's atmosphere, giving the sky its blue appearance?

Detailed Solution for Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 2
Blue light is scattered the most in the Earth's atmosphere, which is why the sky appears blue. This scattering is a result of shorter blue wavelengths being scattered more by atmospheric particles.
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Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 3
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What does the acronym LASER stand for?

Detailed Solution for Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 3
LASER stands for "Light Amplification by Stimulated Emission of Radiation." It refers to a device that produces an intense and highly focused beam of coherent monochromatic light.
Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 4
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What is the primary use of a cyclotron?
Detailed Solution for Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 4
A cyclotron is primarily used to accelerate charged particles, such as protons, in a circular path using a magnetic field.
Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 5
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What is the phenomenon in which a moving charged particle enters a magnetic field and is deflected from its path, becoming circular if the field is uniform?
Detailed Solution for Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 5
The phenomenon in which a moving charged particle enters a magnetic field and is deflected from its path, becoming circular if the field is uniform, is known as "Cyclotron motion."
Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 6
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What is the unit of electric current?
Detailed Solution for Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 6
The unit of electric current is "Ampere" (A).
Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 7
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What type of current flows alternately backward and forward, and is commonly used for electricity distribution?
Detailed Solution for Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 7
Alternating current (AC) is the type of current that flows alternately backward and forward. It is commonly used for electricity distribution because it can be easily transformed and transmitted over long distances.
Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 8
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In which type of spectra do molecules produce band spectra?
Detailed Solution for Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 8
Molecules produce band spectra. These spectra consist of bands of colors rather than distinct lines, and they are obtained from molecules when they are heated to a high temperature.
Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 9
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What instrument is used to measure the rate of evaporation of water into the atmosphere?
Detailed Solution for Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 9
An "Atmometer" is an instrument used to measure the rate of evaporation of water into the atmosphere.
Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 10
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What is the unit of radioactive substance that produces 3.7 × 10^10 disintegrations per second?
Detailed Solution for Test: Dispersion, Colours, Scattering, Diffraction of Light, Magnetism & Electricity - Question 10
The unit of radioactive substance that produces 3.7 × 10^10 disintegrations per second is called a "Curie."
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