Light - Study Mode
[#26] A ray of light passing through the optical center of a concave lens, after refraction will come out-
Correct Answer
(A) without any deviation
[#27] A lens, immersed in a liquid becomes invisible when
Correct Answer
(D) the refractive index of the lens is equal to the refractive index of the liquid
[#28] Which of the following occurs due to refraction? 1. The apparent displacement of a pencil, partly immersed in water. 2. Sun appears before the sunrise. 3. Sky appears blue.
Correct Answer
(A) Only 1 and 2
[#29] Consider the following statements 1. The sky appears blue because of scattering. 2. The main cause of seven colors of the rainbow is scattering of light. 3. At the time of sunrise, the sun appears red, due to scattering of light. Choose the correct statement/s from the given options
Correct Answer
(B) 1 and 3 is true
[#30] For shaving, one uses
Correct Answer
(A) Concave mirror