As per the sign conventions, the focal length of a concave mirror is taken as .

positive

No worries! We‘ve got your back. Try BYJU‘S free classes today!

negative

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

zero

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B negative

The distance between the focus and the pole of a mirror is known as its focal length.

The focal length for a concave mirror is taken as negative because it is measured on the left side of the pole.

Suggest Corrections

Similar questions

Q. As per the sign conventions, the focal length of a convex mirror is taken as positive.

Q. According to New Cartesian Sign Convention:

(a) focal length of concave mirror is positive and that of convex mirror is negative
(b) focal length of both concave and convex mirrors is positive
(c) focal length of both concave and convex mirrors is negative
(d) focal length of concave mirror is negative and that of convex mirror is positive

According to the "New Cartesian Sign Convention" for mirrors, what sign has been given to the focal length of : (i) a concave mirror ? (ii) a convex mirror ?

Q. An object is placed at

60 c m

from the pole of a concave mirror whose focal length is

20 c m

. What is the image distance as per sign convention ?

Q. According to the "New Cartesian Singh Convention" for mirrors, what sign has been given to the focal length of:

(i) a concave mirror?
(ii) a convex mirror?

Join BYJU'S Learning Program

As per the sign conventions, the focal length of a concave mirror is taken as .

The correct option is B negative The distance between the focus and the pole of a mirror is known as its focal length. The focal length for a concave mirror is taken as negative because it is measured on the left side of the pole.

The correct option is B negative

The distance between the focus and the pole of a mirror is known as its focal length.

The focal length for a concave mirror is taken as negative because it is measured on the left side of the pole.