Question

1. a periscope with two non-parallel plane mirrors, what will be the nature of the image as observed by the viewer O? will the image be
I. virtual, erect and magnified
II. real, inverted and magnified
III. real, inverted and diminished
IV. virtual, erect and diminished

PLS HELP ANSWER 1ST QUESTION. IF IT IS CORRECT I WILL MARK YOU AS BRAINLIEST

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Answer 1

Explanation:

Virtual ,Erect and diminished

Answer 2

The nature of image observed by the observer O through the periscope is virtual, erect and diminished.

Explanation:

The option (IV) is the correct option. Reasons are described below:

• In a periscope tube there are two plane mirrors set in each end of the tube.

• Generally image formed by plane mirror is virtual and laterally inverted, but in this case when ray incident on the 1st mirror and reflected ray incident on the 2nd mirror i.e. the reflected ray for the 1st mirror is the incident ray for the 2nd mirror, which results a virtual image without inversion.

• Since the plane mirrors are not parallel to each other in the periscope, hence image is diminished in this case.