Physics-
General
Easy

Question

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 :

  1. L    
  2. fraction numerator 1 over denominator 2 end fraction L    
  3. fraction numerator 1 over denominator 4 end fraction L    
  4. 3 L    

The correct answer is: L

Related Questions to study

General
physics-

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

physics-General
General
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?

physics-General
General
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 r. 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 r. The force F required to prevent the rotation of the gate is equal to

physics-General
parallel
General
physics-

In the figure shown, the heavy cylinder (radius R) resting on a smooth surface separates two liquids of densities 2r and 3r. 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 2r and 3r. The height ‘h’ for the equilibrium of cylinder must be

physics-General
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]:

physics-General
General
physics-

An open cubical tank was initially fully filled with water. When the tank was accelerated on a horizontal plane along one of its side it was found that one third of volume of water spilled out. The acceleration was

An open cubical tank was initially fully filled with water. When the tank was accelerated on a horizontal plane along one of its side it was found that one third of volume of water spilled out. The acceleration was

physics-General
parallel
General
physics-

Figure shows a three arm tube in which a liquid is filled upto levels of height l. It is now rotated at an angular frequency w about an axis passing through arm B. The angular frequency w at which level of liquid in arm B becomes zero.

Figure shows a three arm tube in which a liquid is filled upto levels of height l. It is now rotated at an angular frequency w about an axis passing through arm B. The angular frequency w at which level of liquid in arm B becomes zero.

physics-General
General
physics-

A fluid container is containing a liquid of density r is accelerating upward with acceleration a along the inclined place of inclination a as shown. Then the angle of inclination q of free surface is :

A fluid container is containing a liquid of density r is accelerating upward with acceleration a along the inclined place of inclination a as shown. Then the angle of inclination q of free surface is :

physics-General
General
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 :

physics-General
parallel
General
physics-

A cone of radius R and height H, is hanging inside a liquid of density r 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 r 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
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')

physics-General
General
physics-

Two bodies P and Q have thermal emissivity’s of epsilon subscript p end subscript and epsilon subscript Q end subscript respectively. Surface areas of these bodies are same and the total radiant power is also emitted at the same rate. If temperature of P is qP kelvin then temperature of Q i.e. theta subscript Q end subscript is

Two bodies P and Q have thermal emissivity’s of epsilon subscript p end subscript and epsilon subscript Q end subscript respectively. Surface areas of these bodies are same and the total radiant power is also emitted at the same rate. If temperature of P is qP kelvin then temperature of Q i.e. theta subscript Q end subscript is

physics-General
parallel
General
physics-

The spectral emissive power E subscript lambda end subscript for a body at temperature T1 is plotted against the wavelength and area under the curve is found to be A. At a different temperature T2 the area is found to be 9A. Then lambda subscript 1 end subscript divided by lambda subscript 2 end subscript =

The spectral emissive power E subscript lambda end subscript for a body at temperature T1 is plotted against the wavelength and area under the curve is found to be A. At a different temperature T2 the area is found to be 9A. Then lambda subscript 1 end subscript divided by lambda subscript 2 end subscript =

physics-General
General
physics-

A hollow sphere of inner radius R and outer radius 2R is made of a material of thermal conductivity K. It is surrounded by another hollow sphere of inner radius 2R and outer radius 3R made of same material of thermal conductivity K. The inside of smaller sphere is maintained at 0°C and the outside of bigger sphere at 100°C. The system is in steady state. The temperature of the interface will be :

A hollow sphere of inner radius R and outer radius 2R is made of a material of thermal conductivity K. It is surrounded by another hollow sphere of inner radius 2R and outer radius 3R made of same material of thermal conductivity K. The inside of smaller sphere is maintained at 0°C and the outside of bigger sphere at 100°C. The system is in steady state. The temperature of the interface will be :

physics-General
General
physics-

A metallic rod of cross-sectional area 9.0 cm2 and length 0.54 m, with the surface insulated to prevent heat loss, has one end immersed in boiling water and the other in ice-water mixture. The heat conducted through the rod melts the ice at the rate of 1 gm for every 33 sec. The thermal conductivity of the rod is

A metallic rod of cross-sectional area 9.0 cm2 and length 0.54 m, with the surface insulated to prevent heat loss, has one end immersed in boiling water and the other in ice-water mixture. The heat conducted through the rod melts the ice at the rate of 1 gm for every 33 sec. The thermal conductivity of the rod is

physics-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.