Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Physics Optics
Which mirror is used by ENT doctors to examine the eyes, ears, nose, and throat?
1
Concave mirror
2
Convex mirror
3
Normal mirror
4
More than one of the above
5
None of the above