Shubham Jha - Class 10
A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is
Anonymous Quiz
-50 cm
-60 cm
-25 cm
- 20 cm
1 comment
Yash Maske
Oct 26, 2022
Mam samaj nahi aaya?
