modern and space physics, sources of energy - Category wise Question and Answer Practice Test with Solutions

Question : 1 [SSC]

Audio signal cannot be transmitted because

a) the signal cannot be amplified for distance communication

b) the transmitting antenna length is very small to design

c) the signal has more noise

d) the transmitting antenna length is very large and impracticable

Question : 2

Match List-I with List-II and select the correct answer using the code given below the lists.

a) A – 4 ; B – 2 ; C – 3 ; D – 1

b) A – 2 ; B – 1 ; C – 4 ; D – 3

c) A – 3 ; B – 4 ; C – 1 ; D – 2

d) A – 2 ; B – 4 ; C – 1 ; D – 3

Question : 3

Geothermal energy is

a) energy stored as heat in the earth

b) amount of energy obtained from coal and petroleum inside earth crust.

c) energy of magma inside the earth crust

d) amount of minerals obtained from earth crust

Question : 4 [CDS]

The most familiar form of radiant energy in sunlight that causes tanning and sunburning of human skin, is called

a) visible radiation

b) infrared radiation

c) ultraviolet radiation

d) microwave radiation

Question : 5

In the photoelectric effect, electrons are emitted:

a) With a maximum velocity proportional to the frequency of the incident radiation.

b) At a rate that is independent of the emitter.

c) At a rate that is proportional to the amplitude of the incident radiation.

d) Only if the frequency of the incident radiations is above a certain threshold value.