Question

hetrical Optics
किसी एकल वस्तु से तीन प्रतिबिम्ब प्राप्त करने के लिए, दो दर्पणों को कितने कोण पर रखना होगा-
[AI
(1) 60°
(2) 90°
(3) 120°
(4) 30०
(AI​

Answer 1

it should be kept prependicularaly to o tain three images

Answer 2

120° is the right answer because I think that if we make any angle from compass we always start from 60°