According to the new cartesian sign convention,

Focal length of both, convex and concave mirror is negative.

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Focal length of convex mirror is positive and of concave mirror is negative.

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Focal length of both, convex and concave mirror is negative.

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Focal length of both, convex and concave mirror is positive

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Solution

The correct option is B
Focal length of convex mirror is positive and of concave mirror is negative.

The principal focus of the concave mirror lies on the left side and of convex mirror lies on the right side from the pole.Hence from New Cartesian Sign Conventions, focus of concave mirror is negative and of convex mirror is positive.

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Similar questions

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

Why focal length of convex mirror and convex lens is positive while concave mirror and concave lens negative?

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. According to the new cartesian sign convention, the focal length of a convex mirror is always negative.

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?

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