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Engineering Physics Practice Test 90

# Sound Waves MCQ (Multiple Choice Questions) PDF - 90

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## Sound Waves MCQ Questions : Quiz 90

MCQ 446: Surfaces over which oscillations due to sound wave have the same values are called

A) wavefronts
B) rays
C) sound surface
D) bulk surface

MCQ 447: Equatorial diameter of Uranus is

A) 51800 Km
B) 6790 Km
C) 12100 Km
D) 450 Km

MCQ 448: If body goes a series of identical repeated collisions, where n is number of particles that collides and p is momentum, then impulse is equals to

A) np
B) ndp/dt
C) −ndp/dt
D) 2n+dp/dt

MCQ 449: Density of Germanium at 20° C is

A) 72.59 g/cm3
B) 12.59 g/cm3
C) 6.691 g/cm3
D) 3.691 g/cm3

MCQ 450: Neutron star core has density equals to

A) 2.8x103 kg/m3
B) 3x1017 kg/m3
C) 1x1018 kg/m3
D) 1.6x105 kg/m3

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