Question

C4. Multiple Choice Questions (MCQs): Choose the correct
(d) none of these
(b) increases.
(a) decreases.
(a) 0.
(d) 14.
of the following
1. On increasing the angle between the two reflecting surfaces, the number of images
2. According to the 2nd law of reflection, the angle of incidence is equal to the
(b) angle of refraction. (c) angle of reflection. (d) 180°
3. The number of images formed when the angle between two mirrors is 24° is
6. A man is suffering from myopia. Which of the following statements holds true for hir-
(c) does not change.
(c) remains the same.
(b) one-fifteenth of a second.
(d) one-tenth of a second.
(a) 18.
(b) 20.
(c) 16.
4. When the ciliary muscles relax, the thickness of the lens
(a) increases.
(b) reduces.
(d) sometimes reduces and sometimes increases.
5. The image of an object is retained on the retina for about
(a) one-sixteenth of a second.
(c) one-seventeenth of a second.
(a) He can correct this defect by using convex lenses.
(b) He is not able to see the nearby objects clearly.
(c) This defect can only be treated surgically or through laser.
(d) He wears spectacles with concave lenses of appropriate focal length.​

Answer 1

Answer:

2. b

4. b

5. b

hope this will help u

Answer 2

Answer:

2. b

4. b

5. b

Hope it helps you....