Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Physics Electromagnetic Waves Reflection and Refraction
The amount of light entering the eye may be controlled by varying the aperture of the pupil with the help of ______.
1
Cornea
2
Iris
3
Aqueous humour
4
More than one of the above
5
None of the above