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Easy
Question
A piece of steel has a weight W in air, W1 when completely immersed in water and W2 when completely immersed in an unknown liquid. The relative density (specific gravity) of liquid is:
The correct answer is:
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physics-
A dumbbell is placed in water of density 
. It is observed that by attaching a mass m to the rod, the dumbbell floats with the rod horizontal on the surface of water and each sphere exactly half submerged as shown in the figure. The volume of the mass m is negligible. The value of length l is
A dumbbell is placed in water of density . It is observed that by attaching a mass m to the rod, the dumbbell floats with the rod horizontal on the surface of water and each sphere exactly half submerged as shown in the figure. The volume of the mass m is negligible. The value of length l is
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physics-
A slender homogeneous rod of length 2L floats partly immersed in water, being supported by a string fastened to one of its ends, as shown. The specific gravity of the rod is 0.75. The length of rod that extends out of water is :
A slender homogeneous rod of length 2L floats partly immersed in water, being supported by a string fastened to one of its ends, as shown. The specific gravity of the rod is 0.75. The length of rod that extends out of water is :
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Two cubes of size 1.0 m sides, one of relative density 0.60 and another of relative density = 1.15 are connected by weightless wire and placed in a large tank of water. Under equilibrium the lighter cube will project above the water surface to a height of
Two cubes of size 1.0 m sides, one of relative density 0.60 and another of relative density = 1.15 are connected by weightless wire and placed in a large tank of water. Under equilibrium the lighter cube will project above the water surface to a height of
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physics-
An open-ended U-tube of uniform cross-sectional area contains water (density 1.0 gram/centimeter3) standing initially 20 centimeters from the bottom in each arm. An immiscible liquid of density 4.0 grams/ centimeter3 is added to one arm until a layer 5 centimeters high forms, as shown in the figure above. What is the ratio h2 /h1 of the heights of the liquid in the two arms?
An open-ended U-tube of uniform cross-sectional area contains water (density 1.0 gram/centimeter3) standing initially 20 centimeters from the bottom in each arm. An immiscible liquid of density 4.0 grams/ centimeter3 is added to one arm until a layer 5 centimeters high forms, as shown in the figure above. What is the ratio h2 /h1 of the heights of the liquid in the two arms?
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physics-
A light semi cylindrical gate of radius R is piovted at its mid point O, of the diameter as shown in the figure holding liquid of density . The force F required to prevent the rotation of the gate is equal to
A light semi cylindrical gate of radius R is piovted at its mid point O, of the diameter as shown in the figure holding liquid of density . The force F required to prevent the rotation of the gate is equal to
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In the figure shown, the heavy cylinder (radius R) resting on a smooth surface separates two liquids of densities 
and 
. The height ‘h’ for the equilibrium of cylinder must be
In the figure shown, the heavy cylinder (radius R) resting on a smooth surface separates two liquids of densities and . The height ‘h’ for the equilibrium of cylinder must be
physics-General
physics-
A liquid of mass 1 kg is filled in a flask as shown in figure. The force exerted by the flask on the liquid is (g = 10 m/s2) [Neglect atmospheric pressure]
A liquid of mass 1 kg is filled in a flask as shown in figure. The force exerted by the flask on the liquid is (g = 10 m/s2) [Neglect atmospheric pressure]
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Figure shows a there arm tube in which a liquid is filled upto levels of height l. It is now rotated at an angular frequency 
about an axis passing through arm B. The angular frequency w at which level of liquid in arm B becomes zero
Figure shows a there arm tube in which a liquid is filled upto levels of height l. It is now rotated at an angular frequency about an axis passing through arm B. The angular frequency w at which level of liquid in arm B becomes zero
physics-General
physics-
A fluid container is containing a liquid of density is accelerating upward with acceleration an along the inclined place of inclination 
as shown. Then the angle of inclination 
of free surface is
A fluid container is containing a liquid of density is accelerating upward with acceleration an along the inclined place of inclination as shown. Then the angle of inclination of free surface is
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physics-
The area of cross-section of the wider tube shown in figure is 800 cm2 If a mass of 12 kg is placed on the massless piston, the difference in heights h in the level of water in the two tubes is :
The area of cross-section of the wider tube shown in figure is 800 cm2 If a mass of 12 kg is placed on the massless piston, the difference in heights h in the level of water in the two tubes is :
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physics-
A cone of radius R and height H is hanging inside a liquid of density by means of a string as shown in the figure. The force, due to the liquid acting on the slant surface of the cone is
A cone of radius R and height H is hanging inside a liquid of density by means of a string as shown in the figure. The force, due to the liquid acting on the slant surface of the cone is
physics-General
physics-
The figure shows a radiant energy spectrum graph for a black body at a temperature T. Identify the graph which correctly represents the spectral intensity versus wavelength graph at two temperatures T' and T (T < T')
The figure shows a radiant energy spectrum graph for a black body at a temperature T. Identify the graph which correctly represents the spectral intensity versus wavelength graph at two temperatures T' and T (T < T')
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physics-
The figure shows a radiant energy spectrum graph for a black body at a temperature T. If the temperature of the body is raised to a higher temperature T', then choose the correct statement(s)
The figure shows a radiant energy spectrum graph for a black body at a temperature T. If the temperature of the body is raised to a higher temperature T', then choose the correct statement(s)
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The figure shows a radiant energy spectrum graph for a black body at a temperature T. Choose the correct statement(s)
The figure shows a radiant energy spectrum graph for a black body at a temperature T. Choose the correct statement(s)
physics-General
physics-
An experiment is perfomed to measure the specific heat of copper. A lump of copper is heated in an oven, then dropped into a beaker of water. To calculate the specific heat of copper, the experimenter must know or measure the value of all of the quantities below EXCEPT the
An experiment is perfomed to measure the specific heat of copper. A lump of copper is heated in an oven, then dropped into a beaker of water. To calculate the specific heat of copper, the experimenter must know or measure the value of all of the quantities below EXCEPT the
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