A flat mirror M is arranged parallel to a wal | vedclass

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Question

(D) Since the mirror $M$ is perfectly parallel to the wall $W$,the angle of incidence for any light ray from the point source $S$ remains constant as

Vedclass · Accepted Answer

Both $(B)$ and $(C)$.

Vedclass · Answer

(D) Since the mirror $M$ is perfectly parallel to the wall $W$,the angle of incidence for any light ray from the point source $S$ remains constant as the mirror moves towards the wall. Because the mirror moves parallel to itself,the reflected ray path does not change its direction relative to the wall. Therefore,the position of the light spot on the wall remains stationary. Additionally,since the source $S$ is a point source,the reflected light forms a point image on the wall. As the mirror moves,the geometry of the reflection does not change,so the size of the light spot remains a point (i.e.,it remains the same). Thus,both statements $(B)$ and $(C)$ are correct,making $(D)$ the final answer.

$A$ flat mirror $M$ is arranged parallel to a wall $W$ at a distance $l$ from it. The light produced by a point source $S$ kept on the wall is reflected by the mirror and produces a light spot on the wall. The mirror moves with velocity $v$ towards the wall.

Similar Questions

$A$ ray of light travelling in the direction $\frac{1}{2}(\hat{i}+\sqrt{3} \hat{j})$ is incident on a plane mirror. After reflection,it travels along the direction $\frac{1}{2}(\hat{i}-\sqrt{3} \hat{j})$. The angle of incidence is: (in $^{\circ}$)

Which one of the following statements is true?

Two plane mirrors are placed parallel to each other at a distance $L$ apart. $A$ point object $O$ is placed between them at a distance $L/3$ from one mirror. Both mirrors form multiple images. The distance between any two images cannot be:

Assertion : Plane mirror may form real image.
Reason : Plane mirror forms virtual image,if object is real.

Assertion : The image of a virtual object due to a plane mirror is real.
Reason : If the rays seem to be converging at a point behind a plane mirror,they are reflected and they actually meet in front of the mirror.

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