7th std science,17 Effects of Light
प्रश्न - 10
गुण - 10
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When the beams from the headlights of a car fall on an object in the night. the shadows called umbra and ........ can be seen. *
1 point
During a lunar eclipse the shadow of the earth falls on the ........... *
1 point
During a solar eclipse the shadow of the moon falls on the ......... *
1 point
Various shades of colour are seen in the sky at sunrise and sunset due to .......... *
1 point
A faint shadow of an object called ............. is obtained from an extended source of light. *
1 point
............. It's celebrated as the world anti superstition day. *
1 point
Tiny ............ are seen floating in the beam of light. *
1 point
In the absence of atmosphere the sky would have appeared ............. during the day. *
1 point
The .......... Colour in the sunlight is scattered the most due to the molecules of gases present in the atmosphere. *
1 point
A .......... Eclipse should never be seen with the naked eye. *
1 point
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