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

Consider the following statements:

  1. Speed of wave = $\text"wave length"/\text"time period"$.
  2. Wavelength is the distance between two nearest particles in phase.
  3. The flash of lightening is seen before the sound of thunder is heard.
  4. Speed of sound is greater than speed of light.
Which of the statements given above are correct?

a) 1, 2 and 3

b) 1 and 2

c) 2 and 3

d) 1, 2, 3 and 4

Answer: (a)

Speed of sound at NTP = 332 m/s,

whereas speed of light is 3 × 108

Question : 2 [UPPCS (Pre) 1993]

The hand burns more by steam comparatively to boiling water, because

a) Steam sneaked into the body

b) The steam has more power

c) The steam has latent heat

d) Steam is gig

Answer: (c)

Question : 3 [UPPCS (Pre) 2015]

The number of images of an object placed between two parallel mirrors is

a) Six

b) One

c) Two

d) Infinite

Answer: (d)

Question : 4 [UPPCS (Pre) 2014]

Sound waves do not travel in

a) Liquids

b) Gases

c) Solids

d) Vacuum

Answer: (d)

Question : 5 [IAS (Pre) 1999]

Strips of two metals A and B are firmly jointed together as shown in the figure. On heating, A expands more than B does. If this jointed strip is heated, then it will appear as

Thermodynamics mcq question answer 25

a)

Thermodynamics mcq question answer 25 option b

b)

Thermodynamics mcq question answer 25 option c

c)

Thermodynamics mcq question answer 25 option a

d)

Thermodynamics mcq question answer 25 option d

Answer: (a)

IMPORTANT general science mcq EXERCISES
general science mcq CATEGORIES
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