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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