Light - Study Mode
[#311] The minimum height of mirror, required to see whole stand up image of a man of height 1.50 metre shall be
Correct Answer
(A) 0.75 metre
[#312] In which year did Ole Roemer measure the speed of light for the first time in history?
Correct Answer
(B) 1676
[#313] Television signals cannot be received beyond a certain distance because
Correct Answer
(D) The surface of the Earth is curved
[#314] Which colour is the complementary colour of yellow?
Correct Answer
(A) Blue
[#315] A light wave is incident over a plane surface with velocity x. After reflection the velocity become
Correct Answer
(B) x