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16/08/2021 11:00 am
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Arrange the electromagnetic radiations a, b, c, d and e in increasing order of energy. Frequencies of a, b and c are 1015, 1014 and 1017 respectively whereas wavelength of (d) and (e) are 350 nm and 100 nm respectively?
(a) a, b, c, d, e
(b) a, b, d, e, c
(c) a, d, b, e, c
(d) b, a, d, e, c
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16/08/2021 11:04 am
Correct answer: (d) b, a, d, e, c
Explanation:
E = hv
and v = \(\frac{c}{\lambda}\)
va = 1015, vb = 1014
vc = 1017, vd = 0.85 x 1015
and ve = 3 x 1015