The weight of metal sphere when immersed in water at 0oC is w1 and that at 50oC is w2. If the coefficient of cubical expansion of the metal is less than that of water, then
1) w1=w2
2) w1<w2
3)w1>w2
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Here is a link which will help you to solve this question with proper explanation .
https://www.meritnation.com/ask-answer/question/mcq-a-metal-ball-immersed-in-alcohol-weighs-w1-at-0-deg-ce/mechanical-properties-of-solids/10688547
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Here is a link which will help you to solve this question with proper explanation .
https://www.meritnation.com/ask-answer/question/mcq-a-metal-ball-immersed-in-alcohol-weighs-w1-at-0-deg-ce/mechanical-properties-of-solids/10688547
Regards