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Light moves in straight lines Video Lecture - Class 7

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FAQs on Light moves in straight lines Video Lecture - Class 7

1. How does light travel?
Ans. Light travels in straight lines. It moves in a straight path until it encounters an obstacle or changes medium, where it may bend or scatter.
2. What is the behavior of light when it encounters an obstacle?
Ans. When light encounters an obstacle, it can either be absorbed, transmitted, or reflected. The behavior of light depends on the nature of the obstacle and the properties of the surface it hits.
3. Can light change its path?
Ans. Yes, light can change its path when it travels from one medium to another. This phenomenon is called refraction. When light enters a new medium, it can bend or change direction due to the change in speed.
4. How does light behave when it passes through different materials?
Ans. When light passes through different materials, it can either be transmitted or absorbed. Transparent materials allow light to pass through, while opaque materials do not allow light to pass through and absorb it. Translucent materials partially transmit light.
5. Why does light travel in straight lines?
Ans. Light travels in straight lines due to the rectilinear propagation of light. This means that light travels in a straight path until it encounters an obstacle or changes medium. It follows the shortest distance between two points, resulting in straight-line motion.
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