Question

# Following are the representative wave-length in the Infra-red, Ultra-violet and X-ray regions of the electromagnetic spectrum 1.0×10−6m, 1.0×10−8m and 1.0×10−10m. Which of the following statements is false?

A
The corresponding frequencies of X-ray, UV and IR are in the ratio of 104:102:1
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B
The corresponding velocities of X-ray, UV and IR are in the ratio of 1:102:104
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C
X-rays, UV and IR waves are electromagnetic waves, These are transverse waves.
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D
None of these
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Solution

## The correct option is A The corresponding frequencies of X-ray, UV and IR are in the ratio of 104:102:1Wavelength λ=cν ν=cλλx=10−10m λu=10−8mλI=10−6mνx:νu:νI=1010:108:106=104:102:1Corresponding frequencies ofX−ray,UV,IR are in ratio 104:102:1

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