Q: In a periscope, the two plane mirrors are kept
(a)parallel to each other
(b)perpendicular to each other
(c)at an angle of 60° with each other
(d)at an angle of 45° with each other
Correct Answer: (a)
The correct answer is (a) 'दर्पण एक-दूसरे के समांतर'. This question from the General Studies domain tests knowledge of Miscellaneous.