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CBSE Class 10 Answered

MCQ'S-plz gve the right answer.Also state the reason
Asked by | 22 Feb, 2010, 04:56: PM
answered-by-expert Expert Answer

Dear student

When the block of wood floating it throws out the weight equivalent of water.
Consider the volume (v)of water which has same mass as the wooden block.
As tem perature increases from 0 to 4C density of water goes up as a result v decreases==> block lifts up ,V increases.
4 to 20 C density of water increases ==> v increases  ==> block sinks a bit  V decreases.
Ans wer is 4.


Regards
Team
Topperelarning.com

Answered by | 22 Feb, 2010, 06:08: PM

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