3. An inverted bell lying at the bottom of a lake 47.6 m deep has
50 cm3 of air trapped in it. The bell is brought to the surface of the lake. The volume of the trapped air will be (atmospheric pressure = 70 cm of Hg and density of Hg = 13.6 g/cm3)An inverted bell lying at the bottom of a lake 47.6 m deep has 50 cm3 of air trapped in it. The bell is brought to the surface of the lake. The volume of the trapped air will be (atmospheric pressure = 70 cm of Hg and density of Hg = 13.6 g/cm3)
(a) 350 cm3 (b) 300 cm3
(c) 250 cm3 (d) 22 cm3
Answer- b
(13)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)