light, heat, thermodynamics, wave motion, sound, optics & oscillations - Category wise Question and Answer Practice Test with Solutions

light, heat, thermodynamics, wave motion, sound, optics & oscillations PRACTICE TEST [16 - EXERCISES]

set 1

set 2

set 3

set 4

set 5

set 6

set 7

set 8

set 9

set 10

set 11

set 12

set 13

set 14

set 15

set 16

Question : 1 [NDA]

Sound moves with higher velocity if

a) temperature of the medium is increased

b) pressure of the medium is decreased

c) humidity of the medium is increased

d) Both (a) and (c) above

Answer: (d)

Question : 2 [IAS (Pre) 2017]

What is the purpose of ‘evolved Laser Interferometer Space Antenna (eLISA)’ project?

a) To detect gravitational waves

b) To detect the effectiveness of missile defence system

c) To detect neutrinos

d) To study the effect of solar flares on our communication systems

Answer: (a)

Question : 3 [PCS (Pre) 2013]

For the myopic eye, the defect is cured by

a) Cylindrical lens

b) Concave lens

c) Convex lens

d) Toric lens

Answer: (b)

Question : 4

A thunder clap is heard 5.5 second after the lightening flash. The distance of the flash is (velocity of sound in air = 330 m/s)

a) 300 m

b) 1780 m

c) 1815 m

d) 3560 m

Answer: (c)

Question : 5

A mirage occurs because

a) the hot ground acts like a mirror

b) the refractive index of atmosphere increases with height

c) the refractive index of atmosphere decreases with height

d) refractive index remains constant with height

Answer: (b)

IMPORTANT general science mcq EXERCISES

set 9 Online Quiz

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1647 light thermodynamics sound optics and oscillations based general science mcq set 9 question answer pdf
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