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- 1. Multiple Choice
Which of the following is not a property of light?
Emission of light
Reflection of light
Refraction of light
Absorption of sound
- 2. Multiple Choice
What is the angle of reflection equal to?
Angle of incidence
Angle of diffraction
Angle of deflection
Angle of refraction
- 3. Multiple Choice
When light travels from air to glass, it bends towards the normal. This is an example of:
Refraction
Absorption
Diffraction
Reflection
- 4. Multiple Choice
What happens to the speed of light when it travels from air to water?
The speed of light becomes invisible
The speed of light remains the same
The speed of light decreases
The speed of light increases
- 5. Multiple Choice
What type of mirror is used in a car's rearview mirror?
Flat mirror
Concave mirror
Convex mirror
Plane mirror
- 6. Multiple Choice
What is the law of reflection?
The angle of incidence is equal to the angle of reflection.
Reflection occurs at a random angle.
The law of reflection only applies to curved surfaces.
The angle of incidence is greater than the angle of reflection.
- 7. Multiple Choice
What is the angle of incidence if the angle of reflection is 30 degrees?
30 degrees
45 degrees
20 degrees
60 degrees
- 8. Multiple Choice
What is the phenomenon that causes a pencil to look bent when placed in a glass of water?
Absorption
Diffraction
Refraction
Reflection
- 9. Multiple Choice
Which of the following is an application of refraction?
Bending of light
Reflection of sound waves
Absorption of light
Scattering of radio waves
- 10. Multiple Choice
What is the speed of light in a vacuum?
299,792,458 meters per second
299,792,457 meters per second
300,000,000 meters per second
250,000,000 meters per second
- 11. Multiple Choice
What is the critical angle of a medium with a refractive index of 1.5?
60 degrees
50 degrees
41.81 degrees
30 degrees
- 12. Multiple Choice
What happens to the wavelength of light when it enters a medium with a higher refractive index?
The wavelength decreases
The wavelength increases
The wavelength remains the same
The wavelength becomes invisible
- 13. Multiple Choice
What is the unit of refractive index?
Meters
Dimensionless
Seconds
Kilograms
- 14. Multiple Choice
Which of the following materials has the highest refractive index?
Diamond
Glass
Plastic
Water
- 15. Multiple Choice
What is the focal length of a concave mirror if the object is placed at twice the focal length?
The focal length of the concave mirror is equal to the distance at which the object is placed, which is twice the focal length.
The focal length is three times the distance of the object
The focal length is equal to the distance of the object
The focal length is half the distance of the object
- 16. Multiple Choice
Which of the following describes the speed of light in a vacuum?
3 × 10⁶ m/s
3 × 10⁸ m/s
3 × 10⁷ m/s
- 17. Multiple Choice
When light passes from air into water, what happens to its speed?
Increases
Retains the same
Decreases
It depends on the wavelength of the light
- 18. Multiple Choice
Which phenomenon is responsible for the formation of a rainbow?
Refraction and Dispersion
Diffraction
Refraction
Reflection
- 19. Multiple Choice
A ray of light travels from glass (refractive index = 1.5) into air (refractive index = 1). What happens to the light ray?
It bends towards the normal.
It bends away from the normal.
It continues in a straight line
It is absorbed.
- 20. Multiple Choice
Which phenomenon explains the formation of shadows?
Absorption
Dispersion
Reflection
Refraction
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