Physics General Knowledge Questions and Answers
An object is placed in front of a concave mirror at a point between its focus point and the centre of curvature. The image to be created will be:
(A) virtual and straight
(B) Virtual and opposite
(C) Real and opposite
(D) Real and straight
Correct Answer : C
The method of transmission of heat is-
(A) Conduction
(B) Convection
(C) Radiation
(D) All of these
Correct Answer : D
Which of the following statements is not correct?
(A) The velocity of sound in air increases as the temperature increases.
(B) The velocity of sound in air does not depend on pressure.
(C) The velocity of sound in air decreases with the increase of humidity.
(D) Noise velocity in air is not affected by change in amplitude and frequency.
Correct Answer : C
Stands in front of the driver of the motor vehicle?
(A) concave mirror
(B) plane mirror
(C) convex mirror
(D) Others
Correct Answer : C
The air bubble in the water, which will behave like it is
(A) Convex mirror
(B) Convex lens
(C) Concave mirror
(D) Concave lens
Correct Answer : D
The device that converts alternating current to direct current is called
(A) inverter
(B) rectifier
(C) transformer
(D) transmitter
Correct Answer : B
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Rajesh Bhatia
A Writer, Teacher and GK Expert. I am an M.A. & M.Ed. in English Literature and Political Science. I am highly keen and passionate about reading Indian History. Also, I like to mentor students about how to prepare for a competitive examination. Share your concerns with me by comment box. Also, you can ask anything at linkedin.com/in/rajesh-bhatia-7395a015b/.
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