Giving reasons, state the 'signs' (positive or negative) which can be given to the following : (a) object distance (u) for a concave mirror or convex mirror (b) image distances (v) for a concave mirror (c) image distances (v) for a convex mirror

Open in App

Solution

(a) Object distance (u) for a concave mirror or convex mirror is always negative because an object is always placed to the left side of the mirror and the distances towards the left of the mirror are always negative.
(b) In case of a concave mirror, if the image is formed on the left side of the mirror, then the image distance (v) will be negative and if the image is formed on the right side of the mirror, then the image distance (v) will be positive. This is because distances measured to the left of the mirror are negative and to the right of the mirror is positive.
(c) Image distances (v) for a convex mirror is always positive because the image is always formed behind the mirror.

Suggest Corrections

Similar questions

Q. Giving reasons, state the 'signs' (positive or negative) which can be given to the following:

(a) object distance (u) for a concave mirror or convex mirror
(b) image distance (v) for a concave mirror
(c) image distance (v) for a convex mirror

State the relation between object distance, image distance and focal length of a spherical mirror (concave mirror or convex mirror).

Question 4

You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object you can use either

(a) concave mirror or convex mirror.

(b) concave mirror or convex lens.

(d) concave lens or convex lens.

Q. Which of the following is incorrect ?

a. A convex mirror can give a virtual image.

b. A convex mirror cannot give a real image.

c. A concave mirror can give a virtual image.

d. A concave mirror can give a diminished virtual image.

Q. Which of the following is a correct graph between object distance

(u)

and image distance

(v)

for a concave mirror as per the sign convention?

Join BYJU'S Learning Program