If pressure at half the depth of a lake is equal to $2/3$ pressure at the bottom of the lake then what is the depth of the lake...... $m$
If pressure at half the depth of a lake is equal to $2/3$ pressure at the bottom of the lake then what is the depth of the lake...... $m$
- A
$10$
- B
$20$
- C
$60$
- D
$30$
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- [JEE MAIN 2014]
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