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Questions and Answers
What is the angle of reflection when a ray of light is incident on a plane mirror?
What is the angle of reflection when a ray of light is incident on a plane mirror?
- Half the angle of incidence
- 90 degrees
- Equal to the angle of incidence (correct)
- Double the angle of incidence
When a ray of light passes from air into glass, what happens to its speed?
When a ray of light passes from air into glass, what happens to its speed?
- It remains the same
- It increases
- It becomes zero
- It decreases (correct)
What type of mirror is used in a solar cooker to focus sunlight onto a cooking pot?
What type of mirror is used in a solar cooker to focus sunlight onto a cooking pot?
- Spherical mirror
- Convex mirror
- Concave mirror (correct)
- Plane mirror
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