TNPSC Physics Objective Questions and Answers - 1
Question: 1
____ is the device used in discharge tube to maintain a high potential difference.
(A) DC generator
(B) Induction coil
(C) AC generator
(D) Transformer
Ans: B
Induction coil
Question: 2
The first excitation potential energy or the minimum energy required to excite the atom from ground state of hydrogen atom is ___
(A) 1.89 eV
(B) 13.6 eV
(C) 10.2 eV
(D) 3.4 eV
Ans: C
10.2 eV
Question: 3
The potential required for conduction of electricity through a gas under low pressure is ____
(A) 50 V
(B) 500 V
(C) 5000 V
(D) 50,000 V
Ans: D
50,000 V
Question: 4
Retina of the eye is comparable to which of the following parts of a traditional camera?
(A) Cover
(B) Shutter
(C) Lens
(D) Film
Ans: D
Film
Question: 5
The colour of the star is an indication of its
(A) Distance from the sun
(B) Luminosity
(C) Temperature
(D) Distance from earth
Ans: C
Temperature
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