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 [UPPSC (RI) 2014]

Human eye is most sensitive to visible light of the wavelength

a) 4500 Å

b) 5500 Å

c) 6050 Å

d) 7500 Å

Answer: (b)

Question : 12 [UPPCS (Pre) 1998]

Which one of the following statements is not true about cosmic rays?

a) They are made of highly energetic charged particles

b) They have very short wavelength

c) They are electromagnetic waves

d) They originate from the Sun

Answer: (c)

Question : 13 [PCS (Pre) 2014]

The change of focal length of an eye lense is caused by action of the

a) Ciliary muscles

b) Retina

c) Pupil

d) Iris

Answer: (d)

Question : 14 [UPPCS (Pre) 2015]

For shaving, one uses

a) Convex mirror

b) Plain mirror

c) Concave mirror

d) None of the above

Answer: (c)

Question : 15 [UPPCS (Pre) 2001]

The gas used in discharge tubes for optical decoration and advertising is

a) Sulphur dioxide

b) Ammonia

c) Carbon dioxide

d) Neon

Answer: (d)

IMPORTANT general science mcq EXERCISES

set 11 Online Quiz

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1649 heat wave motion sound optics oscillations based general science mcq set 11 question answer pdf
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