combine to form a drop of radius R. If T is the surface tension
A container is partially filled with a liquid of density ρ 2 . A capillary tube of radius r is vertically inserted in this liquid. Now another liquid of density ρ 1 (ρ 1 <ρ 2 ) is slowly poured in the container to a height h as shown. There is only denser liquid in the capillary tube. The rise of denser liquid in the capillary tube is also h. Assuming zero contact angle, the surface tension of heavier liquid is
11
Oct
A container is partially filled with a liquid of density ρ 2 . A capillary tube of radius r is vertically inserted in this liquid. Now another liquid of density ρ 1 (ρ 1 <ρ 2 ) is slowly poured in the container to a height h as shown. There is only [...]
Calculate the pressure inside a small air bubble of radus r situated at a depth h below the free surface of liquids of densities ρ1 and ρ2 and surface tennsions T1 and T2. The thickness of the first and second liquids are h1 and h2 respectively. Take atmosphere pressure =P0.
11
Oct
Calculate the pressure inside a small air bubble of radus r situated at a depth h below the free surface of liquids of densities ρ1 and ρ2 and surface tennsions T1 and T2. The thickness of the first and second liquids are h1 and h2 respectively. Take atmosphere pressure =P0. A number of droplets combine [...]
A man is rowing a boat with a constant velocity ‘V 0 ‘ in a river the contact area of the boat is ‘A’ and coefficient of viscosity in η. The depth of the river is D. Find the force required to row the boat
11
Oct
A man is rowing a boat with a constant velocity ‘V 0 ‘ in a river the contact area of the boat is ‘A’ and coefficient of viscosity in η. The depth of the river is D. Find the force required to row the boat A number of droplets combine to form a drop of [...]
A rain drop starts falling from a height of 2 km. If falls with a continuously decreasing acceleration and attains its terminal velocity at a height of 1 km. The ratio of the work done by the gravitational force in the first halt to that in the second half of the drops journey is
11
Oct
A rain drop starts falling from a height of 2 km. If falls with a continuously decreasing acceleration and attains its terminal velocity at a height of 1 km. The ratio of the work done by the gravitational force in the first halt to that in the second half of the drops journey is A [...]
The space between two large horizontal metal plates, 6 cm apart, is filled with a liquid of viscosity 0.8 N/m^2 . A thin plate of surface area 0.01 m^2 is moved parallel to the length of the plate such that the plate is at a distance of 2m from one of the plates and 4 cm from the other. If the plate moves with a constant speed of 1 m/s, then
11
Oct
The space between two large horizontal metal plates, 6 cm apart, is filled with a liquid of viscosity 0.8 N/m^2 . A thin plate of surface area 0.01 m^2 is moved parallel to the length of the plate such that the plate is at a distance of 2m from one of the plates and 4 [...]
A glass rod of radius r 1is inserted symmetrically into a vertical capillary tube of radius r 2 such that their lower ends are at the same level. The arrangement is now dipped in water. The height to which water will rise into the tube will be (σ= surface tension of water, ρ= density of water)
11
Oct
A glass rod of radius r 1is inserted symmetrically into a vertical capillary tube of radius r 2 such that their lower ends are at the same level. The arrangement is now dipped in water. The height to which water will rise into the tube will be (σ= surface tension of water, ρ= density [...]
A loop of 6.28 cm long thread is put gently on a soap film in a wire loop. The film is pricked with a needle inside the soap film enclosed by the thread. If the surface tension of soap solution is 0.030 N/m, then the tension in the thread is
11
Oct
A loop of 6.28 cm long thread is put gently on a soap film in a wire loop. The film is pricked with a needle inside the soap film enclosed by the thread. If the surface tension of soap solution is 0.030 N/m, then the tension in the thread is A number of droplets combine [...]
A number of droplets , each of radius r , combine to form a drop of radius R. If T is the surface tension , the rise in temperature will be
11
Oct
A number of droplets , each of radius r , combine to form a drop of radius R. If T is the surface tension , the rise in temperature will be A number of droplets combine to form a drop of radius R. If T is the surface tension each of radius `r` the rise [...]