engineering recuitment AAI Junior Executive (Common Cadre) Mock Test 2023 General Science Physics Optics
If both object distance 'u' and image distance 'v' from a concave mirror is -20 cm and both object size and image size is 4 cm, then what is the radius of curvature 'R' of the mirror?
1
-18 cm
2
-15 cm
3
-10 cm
4
-20 cm
5
None of the above