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 [UPPCS (Pre) 1998]

Which one of the following energy conversions takes place in carrying out the process of photosynthesis?

a) Thermal to biochemical energy

b) Light to thermal energy

c) Light to chemical energy

d) Heat to kinetic energy

Answer: (c)

Question : 12 [PSC (Pre) 2016]

In winter you touch a log of wood and a rod of iron, you will feed rod of iron is colder because

a) In comparison to wood, iron is good conductor of heat

b) In comparison to wood, iron is bad conductor of heat

c) The heat of rod of iron is less than the heat of log of wood

d) The rod of iron is heavier than the log of wood

Answer: (a)

Question : 13 [BPSC (Pre) 1996]

If the lens power of glass is +2 dioptre, its focal length will be

a) 50 cm

b) 100 cm

c) 200 cm

d) 2 cm

Answer: (a)

Question : 14

The rate of flow of heat through a rod depends on:

a) temperature difference across the rod.

b) thermal conductivity of the rod.

c) length of the rod.

d) All of these

Answer: (d)

Rate of flow of heat through a rod.

H = ${kA}/2ΔT$

Question : 15 [UP (Pre) 2002]

Which of the following statement is true?

a) Celestial objects have the greatest velocity

b) The sound has the greatest velocity

c) The light has a greater velocity

d) Rocket has the greatest velocity

Answer: (c)

IMPORTANT general science mcq EXERCISES

set 12 Online Quiz

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1650 heat wave motion sound optics oscillations based general science mcq set 12 question answer pdf
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