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Questions  

Electromagnetic waves with wave length are given.  Arrange these wavelengths in decreasing order of magnitude

a) λ1are used to treat muscular strain                    b) λ2are used by a FM radio station for broadcasting
c)  λ3are used to detect fracture in bones             d)  λ4are absorbed by the ozone layer of the atmosphere

a
λ1>λ2>λ3>λ4
b
λ2>λ1>λ4>λ3
c
λ1<λ2<λ3<λ4
d
λ1>λ2<λ3<λ4

detailed solution

Correct option is B

λ1 belongs to Infrared radiationsλ2 belongs to VHF radiationsλ3 belongs to X-raysλ4 belongs to ultraviolet rays

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