Assertion: Two plane mirrors inclined at an angle of 45° to the vertical tube and facing one another constitute a periscope.

Reason: Plane mirrors facing each other form infinite images.

Which of the following is the correct choice?

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

Both assertion and reason are correct, and the reason is the correct explanation of the assertion.

Both assertion and reason are correct, and the reason is not the correct explanation of the assertion.

The assertion is correct, but the reason is incorrect.

The assertion is incorrect, but the reason is correct.

answer is B.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

Both assertion and reason are correct, and the reason is not the correct explanation of assertion.
Assertion: A good illustration of the law of reflection in action is a periscope. Because light always reflects away from a mirror at the same angle that it strikes it, it is crucial that your mirrors be installed at a 45° angle. Light from an object enters a periscope through the top mirror at a

45 °

angle, where it bounces off at the same angle. This directs light onto the lower mirror and down the tube. This

45 °

-angled mirror reflects light right into your eye. Question Image

Reason: We can create an infinite number of images by aligning two plane mirrors parallel to one another and keeping an object in between them. Therefore, both statements are now correct, but there is no connection whatsoever between the periscope and image formation in the plane mirror.

Watch 3-min video & get full concept clarity