TRB Assistant Professor Previous Year Question Paper - 1
The boiling point of water at 1 atmospheric pressure is
Sound is a
(A) Longitudinal mechanical wave
(B) Longitudinal non mechanical wave
(C) Transverse non mechanical wave
(D) Transverse mechanical wave
Longitudinal mechanical wave
What is the order of magnitude of electric resistance of the human body (dry)?
(A) 102 ohm
(B) 103 ohm
(C) 104 ohm
(D) 106 ohm
The focal length of concave mirror is
(A) The distance between the principal focus and the centre of curvature
(B) The distance between the pole of the mirror and the principal axis.
(C) The distance between the pole of the mirror and the centre of curvature.
(D) None of these
The distance between the pole of the mirror and the principal axis.
Optical fibre works on the principle of
(A) Total internal reflection
Total internal reflection
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