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 : 16 [UPPCS (Mains) 2009]

The mirror, which is used in searchlights, is

a) Simple mirror

b) Convex mirror

c) Concave mirror

d) None of the above

Answer: (c)

Question : 17 [NDA]

If the length of second’s pendulum is increased by 2%, how many seconds will it lose per day?

a) 3456 s

b) 3600 s

c) 1728 s

d) 846 s

Answer: (d)

Question : 18 [PSC (Pre) 2016]

A radio station broadcast at 30 metre band. The frequency of the carrier wave transmitted by this station is

a) 100 kHz

b) 10 MHz

c) 10 kHz

d) 100 MHz

Answer: (b)

Question : 19 [BPSC (Pre) 2011]

The visible range of solar radiation is

a) 740-10000 nm

b) 400-700 nm

c) 100-400 nm

d) None of the above

Answer: (b)

Question : 20 [NDA]

Which one of the following properties distinguishes ultrasound from normal audible sound?

a) Speed of propagation

b) Intensity

c) Frequency

d) Quality

Answer: (c)

IMPORTANT general science mcq EXERCISES

set 3 Online Quiz

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