Physicshard · Past Paper
A simple microscope has a lens of focal length 5 cm. Its magnifying power for relaxed eye (image at infinity) is:
A5
B6
C4
D25
✓ Correct Answer: A — 5
M = D/f = 25 / 5 = 5 (where D is the least distance of distinct vision).
Share this question
More from Physics
- What is the purpose of using a soft iron core in an electromagnet?
- The gravitational force between two bodies is F. If the mass of one body is doubled and distance is halved, the new force is:
- The ratio of the lengths of two pendulums is 1:4. The ratio of their time periods is:
- The value of Universal Gravitational Constant (G) is:
- Which of the following does not possess kinetic energy?