Maharashtra State Service Pre 2024Medium
Q.Say whether following sentences are true or false : (I) For propagation of sound medium is necessary. (II) Unit of frequency of sound is Hertz. (III) Loudness of sound is expressed in decibel unit.
a
(I), (II), (III) are true
b
Only (I), (II) are true
c
Only (II) is true
d
(I), (II), (III) are false
Correct Answer: Option A
The correct solution involves applying the fundamental concept to derive the final value step by step...