Physics GK Questions and Answers
What happens to the speed of a cycle when it travels on a rough surface?
(A) Increases
(B) Decreases
(C) Remains the same
(D) None of these
Correct Answer : B
Who has the maximum field of vision?
(A) plane mirror
(B) convex mirror
(C) concave mirror
(D) All of them
Correct Answer : B
Convex lens is used?
(A) To correct the vision defect in human eye
(B) Visionary
(C) under microscope
(D) All of the above
Correct Answer : D
What is the maximum focus distance of the lens?
(A) Green
(B) For red color
(C) yellow
(D) Purple
Correct Answer : C
Explanation :
The majority of lenses have an infinite maximum focus distance (focus at infinity).
In the following is not an example of refraction of light.
(A) Twinkling effect of stars
(B) Mirages
(C) Bending of light while passing through a medium
(D) lateral inversion
Correct Answer : D
The time period of a pendulum –
(A) Depends on the mass
(B) Depends on its length
(C) Depends on time
(D) Depends on temperature
Correct Answer : B