EASY
10th ICSE
IMPORTANT
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The source of ultraviolet light is:

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Important Questions on Spectrum

EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 6 - Spectrum>EXERCISE-6(A)>Q 3
A radiations A is focused by a proper device on the bulb of a thermometer. Mercury in the thermometer shows a rapid increase. The radiations A is:
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IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 6 - Spectrum>EXERCISE-6(A)>Q 1
An electromagnetic wave has a frequency of 500 MHz and a wavelength of 60 cm. Calculate velocity.
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10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 6 - Spectrum>EXERCISE-6(A)>Q 1
An electromagnetic wave has a frequency of 500 MHz and a wavelength of 60 cm. Name the medium through which it is travelling.
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10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 6 - Spectrum>EXERCISE-6(A)>Q 2
The wavelength of X-ray is 1A∘. Calculate its frequency.
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10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 6 - Spectrum>EXERCISE-6(C)>Q 1
What is meant by scattering of light?
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10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 6 - Spectrum>EXERCISE-6(C)>Q 2
How does the intensity of scattered light depends on the wavelength of incident light? State conditions when this dependence holds.
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10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 6 - Spectrum>EXERCISE-6(C)>Q 3
When sunlight enters the earth’s atmosphere, state which colour of light is scattered the most and which the least?
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10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 6 - Spectrum>EXERCISE-6(C)>Q 4
The danger signal is red. Why?