Question

The mercury in a barometer stands at 75 cm by
the side of a fresh water lake. An air bubble at the
bottom of the lake when rises to the surface, its
volume becomes three times its volume at the
bottom. If specific gravity of the mercury is
40
3
then depth of the lake is
(1) 10 m
(3) 30 m
(2) 20 m
(4) 40 m​

Answer 1

Answer:

40m I hope this answr help you