Light - Study Mode
[#256] What is the distance between the focal point or focus point in the lens and the vision center or optical center?
Correct Answer
(C) focal length
[#257] Rainbow is seen after rain because of hanging molecules of water which act as
Correct Answer
(B) prism
[#258] Match List-I with List-II and select the correct answer: List-I (Disease) List-II (Remedy) a. Hypermetropia 1. Concave lens b. Presbyopia 2. Bifocal lens c. Myopia 3. Surgery d. Cataract 4. Convex lens
Correct Answer
(A) a-4, b-2, c-1, d-3
[#259] The correct relation between the radius of curvature R and focal length f of a spherical mirror is
Correct Answer
(B) R = 2f
[#260] In total internal reflection, the light travels from
Correct Answer
(D) denser to rarer medium and it occurs with loss of intensity