A plano-concave lens has a focal length of 10 cm. If it is cut into two equal halves along its principal axis, then the magnitude of the power of each resulting part is:

What are the characteristics of an image formed by a plane mirror?

Given below are two statements: an Assertion [As] and a Reason [R]. Assertion [As]: A convex mirror cannot form real images of real objects. Reason [R]: Convex mirrors converge the parallel rays of light that are incident on them. Choose the correct alternative: