A boat having some iron pieces is floating in a pond. If iron pieces are thrown in the liquid then level of liquid Increases, Decreases, May increase or decrease, Neither increases nor decreases

 

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An air bubble of volume 1.0 cm3 rises from the bottom of a lake 40 m deep at a temperature of 12 °C. To what volume does it grow when it reaches the surface, which is at a temperature of 35 °C?

A body is executing simple harmonic motion with frequency n the frequency of its potential energy is

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A carpet of mass M made of in-extensible material is rolled along its length in the form of a cylinder of radius R and kept along a rough floor. The carpet starts unrolling without sliding on the floor, when a negligibly sniall push is given to it. The horizontal velocity of, the axis of a cylindrical part of the carpet when its radius is reduced to R/2 is

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Find the time interval between two successive overlaps of hour hand and the minute hand of a clock