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Q.

What are the two natural sources of light and two man-made sources of light?


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a

Sun and stars are natural sources of light

b

Candle and electric bulb are man-made sources of light

c

Both 1 and 2

d

Neither 1 nor 2 

answer is C.

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Detailed Solution

Sun and stars are the two natural sources of light, and candle and electric bulbs are two man-made sources of light.
Objects like the sun, stars, a lighted candle, an electric bulb, or shiny fireflies can produce their own light. They are said to be sources of light. The sun, stars, and glow worms are natural light sources. The candle and electric bulb are human-made sources of light.
 
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