TRB Old Question Papers for Physics - 1

Question: 1

Which of the following is the smallest unit of length?

(A) Angstrom

(B) Micrometer

(C) Fermimetre

(D) Nanometer

Ans: C

Fermimetre

Question: 2

Dynamo is a machine which is used for conversion of

(A) High voltage to low voltage

(B) Low voltage to high voltage

(C) Mechanical energy to electrical energy

(D) Electrical energy to mechanical energy

Ans: C

Mechanical energy to electrical energy

Question: 3

The apparatus used to measure the intensity of light is known as

(A) Altimeter

(B) Lux meter

(C) Colorimeter

(D) Anemometer

Ans: B

Lux meter

Question: 4

Why laser is used in the pipe alignment?

(A) They are directional in nature

(B) They are monochromatic

(C) They are coherent

(D) None of the above

Ans: A

They are directional in nature

Question: 5

The unit of specific heat capacity is

(A) Kg -1 K -1

(B) JK -1

(C) J kg -1 K -1

(D) J kg -1  

Ans: C

J kg -1 K -1

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