Teaching BPSC बिहार मध्य विद्यालय (6 to 8) शिक्षक भर्ती 4.0 Mock Test General Science Physics Optics
Which type of lens is used for correcting Astigmatism?
1
Concave lens
2
Convex lens
3
Cylindrical lens
4
More than one of the above
5
None of the above