As the angle between two plane mirrors is decreased gradually, the number of images of an object placed between them:

(a) increases gradually

(b) decreases gradually

(c) first increases then decreases

(d) first decreases then increases

Q. As the angle between two plane mirrors decreases, the number of images increases. Do you agree? If the angle is given, how will you find the number of images without performing an experiment?

Q. Consider the following statements with reference to the periodic table of chemical elements
(a) Ionization potential gradually decreases along a period.
(b) In a group of elements, electron affinity decreases as the atomic weight increases.
(c) In a given period, electro-negativity decreases as the atomic number increases.
Which of these statements(s) is/are correct?

Q. When the frequency of the AC voltage applied to series LCR circuit is gradually increased from a low value, the impedance of the circuit:

Q.

When an object moves towards a convex lens from beyond 2F upto F, the size of the image _____________.

(a) decreases
(b) increases
(c) remains the same
(d) first decreases then increases