Which of the following are man-made sources of light?

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Lamp

Both (1) and (2)

Torchlight

None of the above

answer is C.

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Detailed Solution

Torch Lights and lamps are man-made sources of light.
A Source of light is defined as any object that gives out light. There are two types of sources, namely natural sources of light and artificial sources of light.
An object that can produce light on its own without any external energy supplied is called a natural light source. Examples of natural light sources are stars like the sun and insects such as fireflies.
For an artificial source of light, an external energy source is given to produce light. These are man-made bulbs, lamps, and torch lights that use batteries as energy sources.
From the above options, torch, light, and lamp are the best examples of artificial light sources.

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