General Physics Questions and Answers
Controls the amount of light entering the eye?
(A) Iris
(B) pupil
(C) lens
(D) side muscles
Correct Answer : A
If the reflection formed in the mirror is always perpendicular to the object in shape, is the mirror?
(A) concave
(B) convex
(C) level
(D) None of these
Correct Answer : C
Explanation :
When the object moves with speed u towards (or away) from the plane mirror then image also moves toward (or away) with speed u. But relative speed of image w.r.t. object is 2u.
Which of the following substances cannot be used for lenses?
(A) Water
(B) Soil
(C) Plastic
(D) glass
Correct Answer : B
What is the orbital velocity of the geostationary satellite?
(A) 3.08 km /s
(B) 6.66 km /s
(C) 4.15 km /s
(D) 2.78 km /s
Correct Answer : A
Alum is used as:
(A) a disinfectant
(B) a purifier for water
(C) an analgesic
(D) a fertilizer
Correct Answer : B
Seawater can be purified by the process of -
(A) filtration
(B) fractional distillation
(C) distillation
(D) evaporation
Correct Answer : C
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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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