Due to which property of light sharp shadows of opaque objects are obtained?

Options

A. Light travels in straight line
B. Light travels in zig-zag
C. Light travels in vacuum
D. None of the above

Explanation

**Step-by-Step Solution:**

1. **Understanding the Concept of Light**: Light travels in straight lines. This fundamental property of light is crucial in understanding how shadows are formed.

2. **Identifying the Opaque Object**: An opaque object is one that does not allow light to pass through it. When light encounters an opaque object, it cannot penetrate or pass through.

3. **Light Source and Shadow Formation**: When a light source emits light rays, these rays travel in straight lines. If a light ray hits an opaque object, it will be blocked and cannot continue in its path.

4. **Formation of Sharp Shadows**: The area behind the opaque object, where the light rays cannot reach, will be devoid of light. This creates a shadow. Since light travels in straight lines, the edges of the shadow will be well-defined, resulting in a sharp shadow.

5. **Conclusion**: The sharpness of the shadow is due to the property of light traveling in straight lines and the fact that opaque objects block the light.

**Final Answer**: The sharp shadows of opaque objects are obtained due to the property of light traveling in straight lines.

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