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 : 26 [CDS]

If the door of a running refrigerator in a closed room is kept open, what will be the net effect on the room?

a) It will heat the room

b) It will cool the room

c) It will make no difference on the average

d) It will make the temperature go up and down

Answer: (a)

Question : 27 [PCS (Pre) 2003]

Thermostat ...... is a mean of Keeping Stable.

a) Temperature

b) Pressure

c) Current

d) Heat Radiation

Answer: (a)

Question : 28 [UPRO/ARO (Mains) 2014]

In the visible spectrum, the colour having the shortest wavelength is

a) Blue

b) Yellow

c) Red

d) Violet

Answer: (d)

Question : 29

The velocity of sound is largest in

a) metal

b) water

c) air

d) vacuum

Answer: (a)

Question : 30

The human eye forms the image of an object at its

a) pupil

b) cornea

c) iris

d) retina

Answer: (d)

IMPORTANT general science mcq EXERCISES

set 7 Online Quiz

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1645 light thermodynamics sound optics and oscillations based general science mcq set 7 question answer pdf
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