RRB GROUP D Physics Quiz - 55

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Question 1:

Radio waves, microwaves, infra-red spectrum, ultraviolet rays, X-rays and gamma rays are classified as ______.

Question 2:

Which one of the following instruments is used to study dispersion of light?

Question 3:

The sounds having a frequency of 20 Hertz to 20,000 Hertz are known as–

Question 4:

The LED is a P-N junction diode that produces light as it passes via an electric current in the forward path. What does abbreviation LED stand for?

Question 5:

Nuclear fission is the subdivision of a heavy atomic nucleus. Which statement is not associated with nuclear fission?