JEE MAIN - Physics (2016 (Offline) - No. 5)
Arrange the following electromagnetic
radiations per quantum in the order of
increasing energy :
A : Blue light B : Yellow light
C : X-ray D : Radiowave.
A : Blue light B : Yellow light
C : X-ray D : Radiowave.
C, A, B, D
B, A, D, C
D, B, A, C
A, B, D, C
Explanation
Energy is in terms of increasing wavelength, we have
$$\lambda$$X-rays < $$\lambda$$Blue light < $$\lambda$$Yellow light < $$\lambda$$Radio waves
Since $$E = {{hc} \over \lambda }$$
Therefore, order of increasing energy is
ERadio waves < EYellow light < EBlue light < EX-rays
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