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I vs V - Varying Frequency

The electroma...

Question

The electromagnetic radiations used for taking photograph of objects in dark:

A

X-rays

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B

Infra-red rays

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C

γ - r a y s

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D

UV rays

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Solution

The correct option is B Infra-red rays
Infrared radiations find applications in physiotherapy and are used to take photographs of objects in darkness.

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γ -

rays have very high penetrating power. Reason:

γ -

rays are electromagnetic radiations of high energy.

Q. Assertion (A) : γ-rays have very high penetrating power.
Reason (R) : γ-rays are high-energy electromagnetic radiations.

γ

-rays produce a grater health hazard to those who work with radioactive element. Reason:

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Q. Name the rays or waves used for taking photographs in dark.

Name the rays of

1.Waves of highest frequency

2.Rays used for taking photographs in the dark

3.Rays of wavelength nearly

0.1 n m

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