Light - Study Mode
[#396] A star appears twinkling in the sky because of
Correct Answer
(C) refraction of light by atmosphere
[#397] Which can divide the sun's light into its constituent colors?
Correct Answer
(C) prism
[#398] The technique used to transmit auto signals in television broadcasts is
Correct Answer
(B) Frequency Modulation
[#399] The head mirror used by ENT doctors is
Correct Answer
(A) concave
[#400] If the radius of curvature of a concave mirror is 6.2 cm, then its focal length will be . . . . . . . . cm.
Correct Answer
(C) 3.1