Physics-
General
Easy
Question
The diagram shows a cup of tea seen from above. The tea has been stirred and is now rotating without turbulence. A graph showing the speed v with which the liquid is crossing points at a distance X from O along a radius XO would look like
The correct answer is:
When we move from centre to circumference, the velocity of liquid goes on decreasing and finally becomes zero.
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There are two identical small holes of area of cross-section a on the opposite sides of a tank containing a liquid of density 
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A U-tube in which the cross-sectional area of the limb on the left is one quarter, the limb on the right contains mercury (density 13.6 g/cm3). The level of mercury in the narrow limb is at a distance of 36 cm from the upper end of the tube. What will be the rise in the level of mercury in the right limb if the left limb is filled to the top with water
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Physics-General
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A cylindrical vessel of 90 cm height is kept filled upto the brim. It has four holes 1, 2, 3, 4 which are respectively at heights of 20 cm, 30 cm, 45 cm and 50 cm from the horizontal floor PQ. The water falling at the maximum horizontal distance from the vessel comes from
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An L-shaped glass tube is just immersed in flowing water such that its opening is pointing against flowing water. If the speed of water current is v, then
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In this figure, an ideal liquid flows through the tube, which is of uniform cross-section. The liquid has velocities
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Physics-General
