This screen is a must to receive the shadowa)Transparent screenb)Opaque screenc)Translucent screend)No screenCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

As transparent objects do not allow light to pass through them, a shadow of the object forms on the ground as light cannot pass through the opaque object.

Answer

The correct option is B.
A shadow is a dark region, and is formed only when a light source, an opaque object and a screen are present. Opaque objects form shadows because light is not able to bend around them.

Answer

Answer:

Explanation:

To understand why an opaque screen is required to receive shadows, let's first define what shadows are and how they are formed.

What are shadows?

Shadows are formed when an object blocks the path of light. When light encounters an opaque object, it cannot pass through it, and instead, the object obstructs the light, creating a dark region behind it. This dark region is the shadow.

Formation of Shadows:

Shadows are formed due to the absence of light in a specific area. When light from a source, such as the Sun or a lamp, falls on an object, three things can happen:

1. Transparent: If the object is transparent, such as a glass window, light can pass through it without obstruction. In this case, shadows will not be formed as the light passes through the object.

2. Translucent: If the object is translucent, such as frosted glass, some light can pass through it, but it scatters in different directions. As a result, shadows will be formed, but they will be less defined compared to opaque objects.

3. Opaque: If the object is opaque, such as a wooden block or a wall, light cannot pass through it. The object blocks the light, and a well-defined shadow is formed behind it.

Why an opaque screen is required to receive shadows?

An opaque screen is required to receive shadows because only an opaque object can block the path of light and create a distinct shadow. Translucent and transparent screens allow light to pass through them, resulting in either no shadow or a less defined shadow.

By using an opaque screen, we can effectively demonstrate the formation and properties of shadows. It allows us to observe the change in the size and position of the shadow when the object or the light source is moved.

Therefore, an opaque screen is a must to receive shadows as it blocks the light and creates a well-defined shadow, making it easier to study and understand the concept of shadows.

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