Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
A long thin walled capillary tube of mass M and radius r is partially immersed in a liquid of surface tension T. The angle of contact for the liquid and the tube wall is 30∘. How much force is needed to hold the tube vertically? Neglect buoyancy force on the tube.
12
Oct
A long thin walled capillary tube of mass M and radius r is partially immersed in a liquid of surface tension T. The angle of contact for the liquid and the tube wall is 30∘. How much force is needed to hold the tube vertically? Neglect buoyancy force on the tube. each of radius 2 [...]
A small steel ball falls through a syrup at a constant speed of 10cm/sec. If the steel ball is pulled upwards with a force equal to twice its effective weight; find the terminal velocity of the ball ( in cm/s ) in this case.
12
Oct
A small steel ball falls through a syrup at a constant speed of 10cm/sec. If the steel ball is pulled upwards with a force equal to twice its effective weight; find the terminal velocity of the ball ( in cm/s ) in this case. each of radius 2 mm fall through aiir at a terminal [...]
A circular ring has inner and outer radii equal to 20 mm and 50 mm respectively Mass of the ring is m = 0.8 g. It gently pulled out vertically from a water surface by a sensitive spring. When the spring is stretched 4 cm from its equilibrium position the ring is on verge of being pulled out from the water surface. If spring constant is k = 0.9 N/m find the surface tension of water.
12
Oct
A circular ring has inner and outer radii equal to 20 mm and 50 mm respectively Mass of the ring is m = 0.8 g. It gently pulled out vertically from a water surface by a sensitive spring. When the spring is stretched 4 cm from its equilibrium position the ring is on verge of [...]
A metallic sphere of radius 1.0 × 10^−3 m and density 1.0 × 10^4 kg/m^3 enters a tank of water, after a free fall through a distance of h in the earth’s gravitational field. If its velocity remains unchanged after entering water, determine the value of h. Given: coefficient of viscosity of water = 1.0 × 10^−3 Ns/m^2,g = 10 m/s^2 and density of water =1.0× 10^3 kg/m3.
12
Oct
A metallic sphere of radius 1.0 × 10^−3 m and density 1.0 × 10^4 kg/m^3 enters a tank of water, after a free fall through a distance of h in the earth’s gravitational field. If its velocity remains unchanged after entering water, determine the value of h. Given: coefficient of viscosity of water = 1.0 [...]
Tags:
A metallic sphere of radius 1.0 × 10^−3 m and density 1.0 × 10^4 kg/m^3 enters a tank of water ,
after a free fall through a distance of h in the earth's gravitational field. If its velocity remains unchanged after entering water ,
determine the value of h . Given: coefficient of viscosity of water = 1.0 × 10^−3 Ns/m^2 ,
g = 10 m/s^2 and density of water =1.0× 10^3 kg/m3. ,
A bubble having surface tension T and radius R is formed on a ring of radius b(b<<R). Air is blown inside the tube with velocity v as shown. The air molecule collides perpendicularly with the wall of the bubble and stops. Calculate the radius at which the bubble separates from the ring.
12
Oct
A bubble having surface tension T and radius R is formed on a ring of radius b(b<<R). Air is blown inside the tube with velocity v as shown. The air molecule collides perpendicularly with the wall of the bubble and stops. Calculate the radius at which the bubble separates from the ring. each of radius [...]
A soap bubble is being blown on a tube of radius 1 cm. The surface tension of the soap solution is 0.05 N/m and the bubble makes an angle of 60 o with the tube as shown. The excess of pressure over the atmospheric pressure in the tube is :
12
Oct
A soap bubble is being blown on a tube of radius 1 cm. The surface tension of the soap solution is 0.05 N/m and the bubble makes an angle of 60 o with the tube as shown. The excess of pressure over the atmospheric pressure in the tube is : each of radius 2 mm [...]
A vessel whose bottom has round holes with diameter of 1 mm is filled with water Assuming that surface tenstion acts only at holes, then the maximum height to which the water can be filled in vessel without leakage is (given surface tension of water is 75×10^−3 N/m) and g = 10 m/s^2
12
Oct
A vessel whose bottom has round holes with diameter of 1 mm is filled with water Assuming that surface tenstion acts only at holes, then the maximum height to which the water can be filled in vessel without leakage is (given surface tension of water is 75×10^−3 N/m) and g = 10 m/s^2 A vessel [...]
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 ^ 2 just midway the surfaces at a speed of 0.5 m/sec is 1 N. The coefficient of viscosity in kg s/m^ 2 is:
12
Oct
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 ^ 2 just midway the surfaces at a speed of 0.5 m/sec is 1 N. The coefficient of viscosity in kg s/m^ 2 is: each of radius 2 mm [...]
A plate of area 2m^(2) is made to move horizontally with a speed of 2m//s by applying a horizontal tangential force over the free surface of a liquid. If the depth of the liquid is 1m and the liquid in contact with the bed is stationary. Coefficient of viscosity of liquid is 0.01 poise. Find the tangential force needed to move the plate.
12
Oct
A plate of area 2m^(2) is made to move horizontally with a speed of 2m//s by applying a horizontal tangential force over the free surface of a liquid. If the depth of the liquid is 1m and the liquid in contact with the bed is stationary. Coefficient of viscosity of liquid is 0.01 poise. Find [...]
The coefficient of viscosity of blood is 2.12 x 10^-3 Pa s and its density is 2.12 x 10^-3 Pa s. Find the blood flow rate ( in pie x 10^-6 m^3/s ), corresponding to the largest average velocity in an artery of radius 2 x 10^-3 m for the flow to be laminar.
12
Oct
The coefficient of viscosity of blood is 2.12 x 10^-3 Pa s and its density is 2.12 x 10^-3 Pa s. Find the blood flow rate ( in pie x 10^-6 m^3/s ), corresponding to the largest average velocity in an artery of radius 2 x 10^-3 m for the flow to be laminar. corresponding [...]