General physics- Knowledge test

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General physics- Knowledge test

Question 71 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Sir C.V. Raman was awarded Nobel Prize for his work connected with which of the following phenomenon of radiation?
A
Scattering
B
Diffraction
C
Interference
D
Polarization
Question 72 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in
A
4.2 seconds
B
42 seconds
C
4.2 years
D
42 years
Question 73 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
It is easier to roll a stone up a sloping road than to lift it vertical upwards because
A
work done in rolling is more than in lifting
B
work done in lifting the stone is equal to rolling it
C
work done in both is same but the rate of doing work is less in rolling
D
work done in rolling a stone is less than in lifting it
Question 74 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Light year is a unit of
A
time
B
distance
C
light
D
intensity of light
Question 75 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Radio telescopes are better than optical telescopes because
A
they can detect faint galaxies which no optical telescope can
B
they can work even in cloudy conditions
C
they can work during the day and night
D
All of the above
There are 75 questions to complete.