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The bell jar breaks up
The mercury level starts rising
The mercury level does not change
The mercury level starts falling
A black body can absorb radiations of;
A block of wood is floating in a lake. The apparent weight of the floating block is
A boat will submerge when it displaces water equal to its own -
A Body absorb Maximum amount Heat, when it is-
A body travelling with the speed of more than the velocity of sound in air is said to travel with
A body weighs slightly more at the poles than at the equator because
A bomb explodes on the Moon. How long will it take for the sound to reach the Earth?
A bomb explodes on the moon. You will hear its sound on earth after _
A bomb is dropped at a point from a moving aeroplane. The pilot observes that
A bottle of sodalime is grasped by the neck swung briskly in a vertical circle, Near which portion of the bottle do the bubbles collect -