Both a spherical mirror and a thin spherical lens have a focal length of (-)15
cm. What type of mirror and lens are these?
Answers
Answered by
1
Answer:
they are concave mirror or lens
Answered by
0
The mirror is convex and lens is concave.
- Focal length of concave mirror and converging lens are always positive while focal length of convex mirror and diverging lens is negative.
- Focal length is the distance between centre of lens and the point of convergence of divergence of light.
- The formula to calculate focal length is = -R/2, where r is the radius of curvature of mirror or lens.
Similar questions