Physics - Ray Optics Question with Solution | TestHub
The position of object on the principal axis of a spherical mirror is given in List-I. Each situation of List-I gives the position of the object from the pole of the mirror in centimeters, its nature, the type of mirror, and the focal length of the mirror in centimeters. On the right side, information regarding the image is given. Correctly match the situations on the left side with the images described on the right side.
List-I | List-II |
|---|---|
(P) Real object is at position 18 cm and focal length of concave mirror is 12 cm | (1) Virtual, Inverted, Enlarged |
(Q) Real object is at position 12 cm and focal length of concave mirror is 18 cm | (2) Virtual, Erect, Diminished |
(R) Real object is at position 8 cm and focal length of convex mirror is 10 cm | (3) Real, Inverted, Enlarged |
(S) Virtual object is at position 10 cm and focal length of convex mirror is 8 cm | (4) Virtual, Erect, Enlarged |
| (5) Virtual, Inverted, Diminished |
Options:
Answer:
Solution:
P: u = -18, f = -12 gives v = -36, m = -2: real, inverted, enlarged (3).
Q: object inside the focus of a concave mirror: virtual, erect, enlarged (4).
R: a convex mirror always forms a virtual, erect, diminished image (2).
S: virtual object u = +10, f = +8 gives v = +40, m = -4: virtual, inverted, enlarged (1).
Answer A.
