Question

Assertion(A): Concave mirrors are used as shaving mirrors. Reason(R): When the face is held within the focus of a concave mirror, then a diminished image of the face is seen in the concave mirror. (a) Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A). (b) Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A). (c) Assertion (A) is true but reason (R) is false. (d) Assertion (A) is false but reason (R) is true.

Answer 1

Hey In this question A) is true but R) is false. As when the face is held between the pole and focus of the concave mirror a virtual erect and enlarged image is formed.

Answer 2

The correct option is: (c) Assertion (A) is true but reason (R) is false.

Assertion(A): Concave mirrors are used as shaving mirrors.

Concave mirrors are used as shaving mirrors as they are converging mirrors. The reflective and curved surface of the concave mirror enables the formation of an enlarged image. Besides this, the image is erect when the face is held closer to the mirror. Hence, this mirror can be used as a shaving mirror to observe the tiny hair.

Reason(R): When the face is held within the focus of a concave mirror, then a diminished image of the face is seen in the concave mirror.

When the face is held within the focus of a concave mirror, then an enlarged image of the face (object) is obtained. The image is virtual and erect too.