Physics-
General
Easy

Question

A cubical block of side 'a' and density 'rho' slides over a fixed inclined plane with constant velocity 'v'. There is a thin film of viscous fluid of thickness 't' between the plane and the block. Then the coefficient of viscosity of the thin film will be:

  1. fraction numerator rho a g t s i n invisible function application theta over denominator v end fraction    
  2. fraction numerator rho a g t invisible function application c o s invisible function application theta over denominator v end fraction    
  3. fraction numerator v over denominator rho a g t s i n invisible function application theta end fraction    
  4. None of these    

The correct answer is: fraction numerator rho a g t s i n invisible function application theta over denominator v end fraction

Related Questions to study

General
physics-

A space 2.5 cm wide between two large plane surfaces is filled with oil. Force required to drag a very thin plate of area 0.5 m to the power of 2 end exponent just midway the surfaces at a speed of 0.5 m/s is 1N. The coefficient of viscosity in kg–sec/m to the power of 2 end exponent is:

A space 2.5 cm wide between two large plane surfaces is filled with oil. Force required to drag a very thin plate of area 0.5 m to the power of 2 end exponent just midway the surfaces at a speed of 0.5 m/s is 1N. The coefficient of viscosity in kg–sec/m to the power of 2 end exponent is:

physics-General
General
physics-

An open pan P filled with water (density rho subscript w end subscript ) is placed on a vertical rod, maintaining equilibrium. A block of density rho is placed on one side of the pan as shown. Water depth is more than height of the block.

An open pan P filled with water (density rho subscript w end subscript ) is placed on a vertical rod, maintaining equilibrium. A block of density rho is placed on one side of the pan as shown. Water depth is more than height of the block.

physics-General
General
physics-

A small ball is left in a viscous liquid form very much height. Correct graph of its velocity with time is :–

A small ball is left in a viscous liquid form very much height. Correct graph of its velocity with time is :–

physics-General
parallel
General
physics-

A homogeneous solid cylinder of length L (L < H/2), cross–sectional area A/5 is immersed such that it floats with its axis vertical at the liquid–liquid interface with length L/4 in the denser liquid as shown in the figure. The lower density liquid is open to atmosphere having pressure P subscript 0 end subscript . Then, density D of solid is given by :–

A homogeneous solid cylinder of length L (L < H/2), cross–sectional area A/5 is immersed such that it floats with its axis vertical at the liquid–liquid interface with length L/4 in the denser liquid as shown in the figure. The lower density liquid is open to atmosphere having pressure P subscript 0 end subscript . Then, density D of solid is given by :–

physics-General
General
physics-

A mercury manometer is connected as shown in the figure. The difference in height capital delta h is : (symbols have usual meaning).

A mercury manometer is connected as shown in the figure. The difference in height capital delta h is : (symbols have usual meaning).

physics-General
General
physics-

There are two identical small holes on the opposite sides of a tank containing a liquid. The tank is open at the top. The difference in height between the two holes is h. As the liquid comes out of the two holes, the tank will experience a net horizontal force proportional to–

There are two identical small holes on the opposite sides of a tank containing a liquid. The tank is open at the top. The difference in height between the two holes is h. As the liquid comes out of the two holes, the tank will experience a net horizontal force proportional to–

physics-General
parallel
General
physics-

The U–tube shown has a uniform cross–section. A liquid is filled in the two arms up to heights h subscript 1 end subscript and h subscript 2 end subscript , and then the liquid is allowed to move. Neglect viscosity and surface tension. When the levels equalize in the two arms, the liquid will–

The U–tube shown has a uniform cross–section. A liquid is filled in the two arms up to heights h subscript 1 end subscript and h subscript 2 end subscript , and then the liquid is allowed to move. Neglect viscosity and surface tension. When the levels equalize in the two arms, the liquid will–

physics-General
General
physics-

A sealed tank containing a liquid of density rho moves with a horizontal acceleration a, as shown in the figure. The difference in pressure between the points A and B is–

A sealed tank containing a liquid of density rho moves with a horizontal acceleration a, as shown in the figure. The difference in pressure between the points A and B is–

physics-General
General
physics-

Water coming out of the mouth of a tap and falling vertically in streamline flow forms a tapering column, i.e., the area of cross–section of the liquid column decreases as it moves down. Which of the following is the most accurate explanation for this :-

Water coming out of the mouth of a tap and falling vertically in streamline flow forms a tapering column, i.e., the area of cross–section of the liquid column decreases as it moves down. Which of the following is the most accurate explanation for this :-

physics-General
parallel
General
physics-

Two very wide parallel glass plates are held vertically at a small separation d, and dipped in water. Some water climbs up in the gap between the plates. Let S be the surface tension of water, P subscript 0 end subscript = atmospheric pressure, P = pressure of water just below the water surface in the region between the plates–

Two very wide parallel glass plates are held vertically at a small separation d, and dipped in water. Some water climbs up in the gap between the plates. Let S be the surface tension of water, P subscript 0 end subscript = atmospheric pressure, P = pressure of water just below the water surface in the region between the plates–

physics-General
General
chemistry-

A square planar complex represented as:

A square planar complex represented as:

chemistry-General
General
physics-

A square box of water has a small hole located in one of the bottom corner. When the box is full and sitting on a level surface, complete opening of the hole results in a flow of water with a speed v subscript 0 end subscript, as shown in figure (1). When the box is tilted by 45 to the power of ring operator end exponent and half filled so that the hole is at the lowest point. Now the water will flow out with a speed of:

A square box of water has a small hole located in one of the bottom corner. When the box is full and sitting on a level surface, complete opening of the hole results in a flow of water with a speed v subscript 0 end subscript, as shown in figure (1). When the box is tilted by 45 to the power of ring operator end exponent and half filled so that the hole is at the lowest point. Now the water will flow out with a speed of:

physics-General
parallel
General
physics-

A non uniform cylinder of mass m, length l and radius r is having its centre of mass at a distance l/4 from the centre and lying on the axis of the cylinder. The cylinder is kept in a liquid of uniform density rho, The moment of inertia of the rod about the centre of mass is I. The angular acceleration of point A relative to point B just after the rod is released from the position shown in figure is :

A non uniform cylinder of mass m, length l and radius r is having its centre of mass at a distance l/4 from the centre and lying on the axis of the cylinder. The cylinder is kept in a liquid of uniform density rho, The moment of inertia of the rod about the centre of mass is I. The angular acceleration of point A relative to point B just after the rod is released from the position shown in figure is :

physics-General
General
physics-

A U–tube of base length l to the power of ´ end exponentfilled with same volume of two liquids of densities rho and 2 rho is moving with an acceleration on the horizontal plane. If the height difference between the two surfaces (open to atmosphere) becomes zero, then the height h is given by–

A U–tube of base length l to the power of ´ end exponentfilled with same volume of two liquids of densities rho and 2 rho is moving with an acceleration on the horizontal plane. If the height difference between the two surfaces (open to atmosphere) becomes zero, then the height h is given by–

physics-General
General
physics-

A narrow tube completely filled with a liquid is lying on a series of cylinder as shown in figure. Assuming no sliding between any surfaces, the value of acceleration of the cylinders for which liquid will not come out of the tube from anywhere is given by

A narrow tube completely filled with a liquid is lying on a series of cylinder as shown in figure. Assuming no sliding between any surfaces, the value of acceleration of the cylinders for which liquid will not come out of the tube from anywhere is given by

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.