RRB GROUP D Physics Quiz - 18

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Question 1:

The hottest part of the gas flame is known as-

Question 2:

Which of the following statement is true for displacement?

Question 3:

In optical instruments, the lenses are used to form image by the phenomenon of ?

Question 4:

What is the radius of curvature of a plane mirror?

Question 5:

Light beam which is highly directional is called-

Question 6:

Device which is used to detect radiant heat?

Question 7:

Woollen clothes are used in winter season because woollen clothes-

Question 8:

Pycnometer is an instrument used to measure the –

Question 9:

Which of the following is true for " the work done upon a body" ?

Question 10:

Which one of the following is not the unit of energy?