Question
Physics Question on Ray optics and optical instruments
A spherical air bubble in water behaves as:
A
Convex lens
B
Concave lens
C
Concave mirror
D
Plane mirror
Answer
Concave lens
Explanation
Solution
Spherical air bubble in water acts as concave lens when the angle of incidence is less than the critical angle and a convex mirror when the angle of incidence is more than critical angle.