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A wooden block of volume 1000cm^(3) is s...

A wooden block of volume `1000cm^(3)` is suspended from a spring balance its weight is 12 N in air. It is suspended in water such that half of the block is below the surface of water. The reading of spring balance is

A

`10 N`

B

`9 N`

C

`8 N`

D

`7 N`

Text Solution

Verified by Experts

The correct Answer is:
D
Reading of the spring balance = Apparent weight of the block = Actual weight - upthrust
`= 12 - V_("in")sigmag`
`=12-500xx10^(-6)xx10^(3)xx10=12-5 =7 N`.
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