Light - Study Mode
[#371] Persistance of vision is the principle behind
Correct Answer
(C) cinema
[#372] Red light is used in traffic signals because
Correct Answer
(C) red light disperses least
[#373] A lady is standing in front of a plane mirror at a distance of 1 m from it. She walks 60 cm towards the mirror. The distance of her image now from herself (ignoring the thickness of the mirror) is
Correct Answer
(C) 80 cm
[#374] An object is placed in front of a concave mirror at a point between its center of curvature and the focus point. Where will the image be formed?
Correct Answer
(C) Between the center of curvature and infinity
[#375] Assertion (A): The danger signal is made up of red colour. Reason (R): Red colour is scattered the least. Select the correct answer:
Correct Answer
(A) Both (A) and (R) are true and (R) is the correct explanation of (A)