Question

Match the following.

1. Kaleidoscope	a. Faint Shadow
2. Glass	b. Beautiful patterns
3. Penumbra	c. Transparent
4. Glow Worm	d. Submarines
5. Periscope	e. Natural source of light

Accepted Answer

1. Kaleidoscope - b. Beautiful patterns

Kaleidoscope is an instrument which is working on the principle of multiple reflection of light, and can form beautiful coloured patterns when objects are placed inside it.

2. Glass - c. Transparent

Glass is a transparent material, which allows light to pass through it.

3. Penumbra - a. Faint Shadow

The faint part of the shadow is called penumbra. It is the partially shaded outer region of the shadow cast by an opaque object.

4. Glow worm - e. Natural source of light

A glow worm is an example of a natural source of light. The glow worm emits its own light naturally, which is known as bioluminescence.

5. Periscope - d. Submarines

A periscope is an object that works based on reflection of light. Periscope is used in submarines to observe the surface of water from inside.

1. Kaleidoscope b. Beautiful patterns

2. Glass c. Transparent

3. Penumbra a. Faint Shadow

4. Glow Worm e. Natural source of light

5. Periscope d. Submarines

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Jhara Roy Science Solutions for Exercise - Jhara Roy Solutions for Chapter: Light, Shadows and Reflections, Exercise 3: SUMMATIVE ASSESSMENT

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