NEET 2003
- Exam
- NEET
- Year
- 2003
- Subject
- Physics
- Chapter
- Ray Optics
NEET 2003 · Physics · Ray Optics
A convex lens is dipped in a liquid whose refractive index is equal...
A convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens. Then its focal length will:
Options
- Abecome zero
- Bbecome infinite
- Cbecome small, but non-zero
- Dremain unchanged
Correct answer
B. become infinite
Step-by-step solution
When refractive index of lens is equal to the refractive index of liquid, the lens behave like a plane surface with focal length infinity.