Light - Study Mode
[#81] The radius of curvature of the plane mirror is
Correct Answer
(C) Infinity
[#82] An object at 1.2 cm height is placed 30 cm before a concave mirror of focal length of 20 cm to get a real image at a distance of 60 cm from the mirror. What is the height of the image formed?
Correct Answer
(A) -2.4 cm
[#83] A convex mirror focal length f (in air), is immersed in a fluid $$left( {mu = frac{4}{3}}
ight)$$ . The focal length of the mirror in liquid will be-
Correct Answer
(B) $$left( {frac{4}{3}}
ight)f$$
[#84] Rainbow is a natural phenomenon, which shows . . . . . . . .
Correct Answer
(D) Scattering
[#85] The Sky appears blue due to
Correct Answer
(A) Blue colour is scattered most