GK Questions for Interview. We covered all the GK Questions for Interview in this post for free so that you can practice well for the exam.
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GK Objective Questions for Interview
MAC digits are used in relation to velocity
(a) of sound
(b) of vessel
(c) of aircraft
(d) of spacecraft
Option c – of aircraft
Decibel is
(a) a musical instrument
(b) an instrumental voice
(c) a unit of measurement of sound level
(d) a wavelength of noise
Option c – a unit of measurement of sound level
The frequency of audible waves is
(a) less than 20 Hz
(b) more than 20 Hz
(c) more than 20,000 Hz
(d) from 20 Hz to 20,000 Hz
Option a – less than 20 Hz
Bats fly in the dark because
(a) Bats produce ultrasonic waves
(b) Bats produce infrasonic waves
(c) Bats produce audible waves
(d) Bats are seen more in the dark
Option a – Bats produce ultrasonic waves
Sound waves cannot move in
(a) water
(b) air
(c) iron
(d) vacuum
Option d – vacuum
The speed of sound is the maximum
(a) in air
(b) in vacuum
(c) in water
(d) in steel
Option d – in steel
The velocity of sound in air is approximately
(a) 330 m/s
(b) 220 m/s
(c) 110 m/s
(d) 232 m/s
Option a – 330 m/s
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