Question 1: Define the law of reflection of light.

Answer: The law of reflection states that the angle of incidence is equal to the angle of reflection, measured relative to the normal to the surface.

Question 2: Explain how the surface of a mirror influences the reflection of light.

Answer: A smooth, shiny surface like a mirror reflects light in a regular, predictable way, producing a clear image due to specular reflection.

Question 3: In an experiment, light strikes a mirror surface at an incident angle of 30°. What is the reflection angle?

Answer: 30° (since the angle of reflection equals the angle of incidence)

Question 4: Describe a simple experiment to demonstrate the law of reflection.

Answer: Use a plane mirror, a protractor, and a light source. Shine a beam of light at the mirror at a known incident angle, then measure the reflected beam's angle. Confirm that the incident and reflected angles are equal relative to the normal.

Question 5: In a reflection experiment, the incident angle is 45°. What is the expected reflection angle?

Answer: 45°

Question 6: Multiple Choice: Which of the following surfaces produces diffuse reflection?

Answer: Rough wall surface

Question 7: Fill in the blank: When light reflects off a surface, the angle of reflection is _______ to the angle of incidence.

Answer: equal

Question 8: List two real-world applications that rely on the principles of light reflection.

Answer: Mirrors for personal grooming and periscopes in submarines.

Question 9: Explain why the reflection from a rough surface is scattered in many directions.

Answer: A rough surface has irregularities that cause incident light rays to reflect at different angles, resulting in scattered, diffuse reflection instead of a clear image.

Question 10: A flashlight beam hits a mirror at an incident angle of 60°. What is the angle of reflection? Show your reasoning.

Answer: The angle of reflection is 60°, as per the law of reflection which states that the incident angle equals the reflection angle.