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Question:

Match List - I (Event) with List - II (Order of the time interval for happening of the event) and select the correct option from the options given below the lists.
List - I
List - II
(a) Rotation period of earth (i) 10⁵s
(b) Revolution period of earth (ii) 10⁷s
(c) Period of a light wave (iii) 10⁻¹⁷s
(d) Period of a sound wave (iv) 10⁻⁵s

(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

(a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)

(a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)

(a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)

Solution:

The rotation period of the Earth is approximately 86400 seconds (24 hours). The revolution period of the Earth is approximately 31,536,000 seconds (365.25 days). The period of a light wave is on the order of 10⁻¹⁵ to 10⁻¹⁷ seconds, while the period of a sound wave is on the order of 10⁻⁵ seconds. Therefore, the correct matching is:
(a) - (ii)
(b) - (i)
(c) - (iii)
(d) - (iv)
The correct option is (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)