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A long capillary tube of radius ‘r’ is initially just vertically completely imerged inside a liquid of angle of contact 00 If the tube is slowly raised then relation between radius of curvature of miniscus inside the capillary tube and displacement (h) of tube can be represented by
The correct answer is:
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Equal volumes of two immiscible liquids of densities r and 2rare filled in a vessel as shown in figure. Two small holes are punched at depth h/ 2 and 3h/2 from the surface of lighter liquid. If v1 and v2 are the velocities of a flux at these two holes, then v1 /v2 is :
Equal volumes of two immiscible liquids of densities r and 2rare filled in a vessel as shown in figure. Two small holes are punched at depth h/ 2 and 3h/2 from the surface of lighter liquid. If v1 and v2 are the velocities of a flux at these two holes, then v1 /v2 is :
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A gun throws a shell with a muzzle speed of 98 m/s. When the gun is elevated at 45°, the range is observed as 900m. Due to air resistance its range is decreased by ..
A gun throws a shell with a muzzle speed of 98 m/s. When the gun is elevated at 45°, the range is observed as 900m. Due to air resistance its range is decreased by ..
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A boy playing on the roof of a 10m high building throws a ball with a speed of 10m/s at an angle of 30° with the horizontal. How far from the throwing point the ball be at a height of 10m from the ground ?
A boy playing on the roof of a 10m high building throws a ball with a speed of 10m/s at an angle of 30° with the horizontal. How far from the throwing point the ball be at a height of 10m from the ground ?
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For a projectile the value which depends on the vertical component of velocity of projection?
For a projectile the value which depends on the vertical component of velocity of projection?
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A hose pipe lying on the ground shoots a stream of water upward at an angle of 60° to the horizontal at a speed of 20m/s The water strikes a wall 20m away at a height of.. (g=10m/s²)
A hose pipe lying on the ground shoots a stream of water upward at an angle of 60° to the horizontal at a speed of 20m/s The water strikes a wall 20m away at a height of.. (g=10m/s²)
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At the highest point on the trajectory of projectile its ..
At the highest point on the trajectory of projectile its ..
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A bomb is released by a horizontal flying aeroplane Then the trajectory of bomb is ...
A bomb is released by a horizontal flying aeroplane Then the trajectory of bomb is ...
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If the change in the value of ‘g’ at a height ‘h’ above the surface of the earth is same as at a depth ‘x’ below it when both ‘x’ and ‘h’ are much smaller than the radius of the earth, then.
If the change in the value of ‘g’ at a height ‘h’ above the surface of the earth is same as at a depth ‘x’ below it when both ‘x’ and ‘h’ are much smaller than the radius of the earth, then.
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The escape velocity for a body projected vertically upwards from the surface of earth is 11km/s If the body is projected at an angle of 45° with the vertical, the escape velocity will be.
The escape velocity for a body projected vertically upwards from the surface of earth is 11km/s If the body is projected at an angle of 45° with the vertical, the escape velocity will be.
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Two identical trains A and B move with equal speeds on parallel tracks along the equator. A moves from east to west and B moves from west to east. Which train will exert greater force on the track?
Two identical trains A and B move with equal speeds on parallel tracks along the equator. A moves from east to west and B moves from west to east. Which train will exert greater force on the track?
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The force of attraction between two bodies separated by a distance ‘d’ is ‘F’ The distance for which the force of attraction between them is 64F is.
The force of attraction between two bodies separated by a distance ‘d’ is ‘F’ The distance for which the force of attraction between them is 64F is.
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An ideal monoatomic gas is carried around the cycle ABCDA as shown in the figure. The efficiency of the gas cycle is :
An ideal monoatomic gas is carried around the cycle ABCDA as shown in the figure. The efficiency of the gas cycle is :
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A mass of ideal gas is first expanded isothermally and then compressed adiabatically to its original volume.
What further simplest operation must be performed on the gas to restore it to its original state.
A mass of ideal gas is first expanded isothermally and then compressed adiabatically to its original volume.
What further simplest operation must be performed on the gas to restore it to its original state.
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A volume (V)-temperature (T) diagram was obtained when a given mass of gas was heated. During the heating process from state 1 to state 2, the pressure :
A volume (V)-temperature (T) diagram was obtained when a given mass of gas was heated. During the heating process from state 1 to state 2, the pressure :
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The distribution of relative intensity I (
) of blackbody radiation from a is shown in the figure. If the Wien solid body versus the wavelength displacement law constant is 2.9 × 10-3 mK, what is the approximate temperature of the object?
The distribution of relative intensity I () of blackbody radiation from a is shown in the figure. If the Wien solid body versus the wavelength displacement law constant is 2.9 × 10-3 mK, what is the approximate temperature of the object?
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