Why are the bright circles of light seem under the trees,
when the sun shines?
Answer / guest
Because small spaces between the leaves act like pinholes
and make the images of the sun on the ground
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What is an alloy ?
Explain the Hydrogen and its Compounds ?
Why is sodium preserved in kerosene oil ?
A balloon constructed in Calcutta during July-August was found to show cracks at most wooden joints when received at Ferozepore in December. What is the probable cause ?
How is temporary hardness be removed?
While standing on railway platform and heating the whistle of an engine coming towards us , we hear the sound increasing; bit when the engine is receding from us it appears to fall why ?
Why do we hear thunder after seeing a flash of lightning ?
what is the formula of petrol
Why is estimation of copper done at 620 nm wave length?
The heat of the sun reaches us and the intervening air is not heated up Why ?
Can a molecule be divided ?
if this element X combines with another element Y whose electronic configuration is 2, 8, 7 what will be the formula of the compound thus formed? State how did you arrive at this formula