Question

The image formed in a periscope is ________.

• A. real with laterally inverted
• B. virtual with laterally inverted
• C. real without laterally inverted
• D. virtual without laterally inverted

Answer 1

The correct option is D virtual without laterally inverted


Periscope is an instrument in which plane mirrors are set parallel to each other at 45 degrees angle.
An image formed by the first plane mirror is virtual and lateral inverted. This reflected ray from the first mirror now can be treated as an incident ray for the second mirror. The laterally inverted image which acts as object for the second mirror, again gets laterally inverted from the second mirror. The second time lateral inversion results in a virtual and without laterally inverted image of the actual object.