Physicshard · Past Paper
A ray of light is incident on a plane mirror. If the mirror is rotated by 10 degrees, the reflected ray rotates by:
A10 degrees
B20 degrees
C5 degrees
D0 degrees
✓ Correct Answer: B — 20 degrees
If the mirror is rotated by theta, the reflected ray rotates by 2*theta, provided the incident ray direction is fixed.
Share this question
More from Physics
- Three resistors of 1, 2, and 3 Ohms are connected in series. The potential difference across the 2 Ohm resistor if the total voltage is 12V is:
- What is the mass of the Earth?
- The formula for pressure exerted by a liquid column is:
- What happens to the kinetic energy of an object if its velocity is doubled?
- The atmospheric pressure at sea level is approximately: