Physics-
General
Easy
Question
A glass tube of uniform internal radius (r) has a valve separating the two identical ends. Initially, the valve is in a tightly closed position. End 1 has a hemispherical soap bubble of radius r. End 2 has sub–hemispherical soap bubble as shown in figure. Just after opening the valve,
- Air from end 1 flows towards end 2. No change in the volume of the soap bubbles.
- Air from end 1 flows towards end 2. Volume of the soap bubble at end 1 decreases.
- No change occurs
- Air from end 2 flows towards end 1. Volume of the soap bubble at end 1 increases.
The correct answer is: Air from end 1 flows towards end 2. Volume of the soap bubble at end 1 decreases.
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Water is filled up to a height h in a beaker of radius R as shown in the figure. The density of water is 
, the surface tension of water is T and the atmospheric pressure is 
. Consider a vertical section ABCD of the water column through a diameter of the beaker. The force on water on one side of this section by water on the other side of this section has magnitude :–
Water is filled up to a height h in a beaker of radius R as shown in the figure. The density of water is , the surface tension of water is T and the atmospheric pressure is . Consider a vertical section ABCD of the water column through a diameter of the beaker. The force on water on one side of this section by water on the other side of this section has magnitude :–
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)
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The adjacent graph shows the extension 
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A hemispherical portion of radius R is removed from the bottom of a cylinder of radius R. The volume of the remaining cylinder is V and mass M. It is suspended by a string in a liquid of density , where it stays vertical. The upper surface of the cylinder is at a depth h below the liquid surface. The force on the bottom of the cylinder by the liquid is :–
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There is a circular tube in a vertical plane. Two liquids which do not mix and of densities 
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A thin liquid film formed between a U-shaped wire and a light slider supports a weight of 
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A jar is filled with two non-mixing liqudis 1 and 2 having densities 
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Mean intenal radius of capillary is
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Mean intenal radius of capillary is
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Statement-I : In Searle’s experiment, extension versus load curve is drawn as shown In the plot the first two readings are not lying on the straight line.
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Statement-II : Experiment is performed incorrectly
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In the experiment to determine Young’s modulus of the material of a wire under tension used in the arrangement as shown The percentage error in the measurement of length is ‘a’, in the measurement of the radius of the wire is ‘b’ and in the measurement of the change in length of the wire is ‘c’ Percentage error in the measurement of Young’s modulus for a given load is
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The graph shows the change ' ' in the length of a thin uniform wire used by the application of force ‘F’ at different temperatures T1 and T2 The variation suggests that
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Statement–I : As wind flows left to right and a ball is spined as shown, there will be a lift of the ball.
Statement–II : Decrease in velocity of air below the ball, increases the pressure more than that above the ball
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Statement–II : Decrease in velocity of air below the ball, increases the pressure more than that above the ball
physics-General
