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 : 11 [BPSC (Pre) 1998]

The nature of radiation of light is

a) Like both of wave and particle

b) Like particle

c) Like wave

d) Like neither of wave nor of particle

Answer: (a)

Question : 12

A bimetallic strip consists of brass and iron. When it is heated it bends into an arc with brass on the convex and iron on the concave side of the arc. This happens because

a) it is easier to bend an iron strip than a brass strip of the same size

b) brass has a higher specific heat capacity than iron

c) density of brass is more than that of iron

d) brass has a higher coefficient of linear expansion than iron

Answer: (d)

It is so because brass has a higher coefficient of linear expansion.

Question : 13 [PSC (Pre) 2019]

Which one of the following changes occurs when salt is added into the water?

a) Boiling point is decreased and freezing point is increased

b) Both boiling point and freezing point are decreased

c) Boiling point is increased and freezing point is decreased

d) Both boiling point and freezing point are increased

Answer: (c)

Question : 14 [UPPCS (Pre) 2010]

Which one of the following statement is not true for a person suffering from hypermetropia?

a) The image of the close objects is focused behind the retina

b) The focal length of the lens is large

c) The person can see far objects distinctly

d) A concave lens is used to correct this defect

Answer: (d)

Question : 15

In the visible spectrum the colour having the shortest wavelength is

a) violet

b) green

c) red

d) blue

Answer: (a)

IMPORTANT general science mcq EXERCISES

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1642 light thermodynamics sound optics and oscillations based general science mcq set 4 question answer pdf
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