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A student uses a spring balance of least...

A student uses a spring balance of least count 10 g wt and range 500 g wt. He records the weight of a small iron cube in air, in tap water and in a cancentrated solution of common salt in water, If his three reading taken in this order are `W_1(=50gwt`), `W_2` and `W_3` he is likely to observe that:

A

`W_1gtW_2gtW_3`

B

`W_1gtW_2=W_3`

C

`W_1gtW_3gtW_2`

D

`W_1=W_2ltW_3`

Text Solution

Verified by Experts

The correct Answer is:
A
Weight of iron cube in liquid`=`weight of iron cube in air`-`weight of liquid displaced by iron cube The weight of liquid displaced by iron cube depends on the density of the liquid in which it is immersed. Since density of concentrated solution of common salt in water is more than tap water weight`(W_2)` of iron cube in tap water is more than its weight `(W_3)` in common salt solution i.e. `W_2gtW_3`. Further, as `W_1gtW_2`:`W_1gtW_2gtW_3`.
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