Light Shadows and Reflections Class 7 Long Question Answer

Light Shadows and Reflections Class 7 Long Question Answer

Light Shadows and Reflections Class 7 Long Question Answer

Question 1.

Explain the process of how a pinhole camera works.

Answer:

A pinhole camera consists of a dark box with a small hole on one side and a translucent screen on the opposite side. Light from an object passes through the hole, forming an inverted image on the screen, demonstrating the principles of light travel and image formation.

Question 2.

What factors affect the size and shape of a shadow?

Answer:

The size and shape of a shadow depend on the distance between the object and the light source, the angle of the light, and the shape of the object itself. Closer objects create larger shadows, while angled light can distort their shapes.

Question 3.

How do mirrors change the direction of light?

Answer:

Mirrors reflect light, changing its direction. When light strikes a mirror, it bounces off at the same angle at which it hit the surface, a principle known as the law of reflection. This property is utilized in various applications, including optical devices and everyday mirrors.