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 : 21 [UPPSC (RI) 2014]

Light appears to travel in a straight line because

a) The wavelength of light is very small

b) The velocity of light is very large

c) It consists of small particles

d) Light is reflected by the surroundings

Answer: (a)

Question : 22

If a tunnel is dug along the diameter of earth and a piece of stone is dropped into it, then the stone will

a) start oscillating about the centre of the earth

b) come out of the another end of the earth and will escape out in space

c) come to rest at the centre of the earth

d) stop at another end of the earth

Answer: (a)

Question : 23 [PCS (Pre) 2012]

Assertion (A):
The handle of pressure cooker is made up of Abonite.
Reason (R):
Abonite is a hard material.
Code

a) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

b) (A) is true, but (R) is false

c) Both (A) and (R) are true and (R) is the correct explanation of (A)

d) (A) is false, but (R) is true

Answer: (a)

Question : 24 [UPPCS (Mains) 2013]

The red colour of the Sun at Sunset and Sunrise is due to

a) Total internal reflection of light

b) Refraction of light

c) Scattering of light

d) Dispersion of light

Answer: (c)

Question : 25 [RAS/RTS (Pre) 1996]

Which of the following has the longest wavelength?

a) X-rays

b) Visible light

c) Infrared

d) Radio waves

Answer: (d)

IMPORTANT general science mcq EXERCISES

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1641 light thermodynamics sound optics and oscillations based general science mcq set 3 question answer pdf
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