Arihant Physics by D.C Pandey
Suppose a vertical tunnel is along the diameter of the earth, assumed to be a sphere of uniform mass density ρ. If a body of mass m is thrown in this tunnel, its acceleration at a distance y from the centre is given by:
18
Sep
Suppose a vertical tunnel is along the diameter of the earth, assumed to be a sphere of uniform mass density ρ. If a body of mass m is thrown in this tunnel, its acceleration at a distance y from the centre is given by: assumed to be a sphere of uniform mass density ρ. If [...]
A particle would take a time t to move down a straight tube from the surface of earth (supposed to be homogeneous sphere) to its centre. If gravity were to remain constant then the time would be t. The ratio t/t ′ will be
18
Sep
A particle would take a time t to move down a straight tube from the surface of earth (supposed to be homogeneous sphere) to its centre. If gravity were to remain constant then the time would be t. The ratio t/t ′ will be In the figure shown September 18, 2020 Category: Arihant Physics by [...]
A person brings a mass of 1kg from infinity to a point A. Initially the mass was at rest but it moves at a speed of 2m/s as it reaches A. The work done by a person on the mass is -3J. The potential at A is:
18
Sep
A person brings a mass of 1kg from infinity to a point A. Initially the mass was at rest but it moves at a speed of 2m/s as it reaches A. The work done by a person on the mass is -3J. The potential at A is: In the figure shown September 18, 2020 Category: [...]
A container has a small hole at its bottom. Area of cross-section of the hole is A1 and that of the container is A2. Liquid is poured in the container at a constant rate Qm^3s−1. The maximum level of liquid in the container will be
18
Sep
A container has a small hole at its bottom. Area of cross-section of the hole is A1 and that of the container is A2. Liquid is poured in the container at a constant rate Qm^3s−1. The maximum level of liquid in the container will be In the figure shown September 18, 2020 Category: Arihant Physics [...]
There is a hole of an area a at a bottom of cylindrical of area A. water is filled up to a height h and water flow out in t second. If water is filled to a height 4h, it will flow out in time.
18
Sep
There is a hole of an area a at a bottom of cylindrical of area A. water is filled up to a height h and water flow out in t second. If water is filled to a height 4h, it will flow out in time. it will flow out in time. There is a hole [...]
Air is blown through a pipe AB at a rate of 15 L/min. The cross-sectional area of the broad portion of the pipe AB is 2 cm^2 and that of the narrow portion is 0.5 cm^2 . The difference in water level h is : (density of air=1.32 kg/m 3 )
18
Sep
Air is blown through a pipe AB at a rate of 15 L/min. The cross-sectional area of the broad portion of the pipe AB is 2 cm^2 and that of the narrow portion is 0.5 cm^2 . The difference in water level h is : (density of air=1.32 kg/m 3 ) In the figure shown [...]
If cross- sectional area of limb I is A1 and that of limb II is A2 then velocity of the liquid in the tube will be, (cross- sectional area of tube is very small)
18
Sep
If cross- sectional area of limb I is A1 and that of limb II is A2 then velocity of the liquid in the tube will be, (cross- sectional area of tube is very small) (cross- sectional area of tube is very small) If cross- sectional area of limb I is A1 and that of limb [...]
Air stream flows horizontally past an aeroplane wing of surface area 4m^2. The speed of air over the top surface is 60ms^−1 and under the bottom surface is 40ms^−1 The force of lift on the wing is (density of air =1kgm^−3)
18
Sep
Air stream flows horizontally past an aeroplane wing of surface area 4m^2. The speed of air over the top surface is 60ms^−1 and under the bottom surface is 40ms^−1 The force of lift on the wing is (density of air =1kgm^−3) In the figure shown September 18, 2020 Category: Arihant Physics by D.C Pandey , [...]
The pressure of water in a pipe when tap is closed are 5.5 x 10^5N/m^2. When tap gets open, pressure reduces to 5×10^5N/m^2. The velocity with which water comes out on opening the tap is
18
Sep
The pressure of water in a pipe when tap is closed are 5.5 x 10^5N/m^2. When tap gets open, pressure reduces to 5×10^5N/m^2. The velocity with which water comes out on opening the tap is pressure reduces to 5x10^5N/m^2. The velocity with which water comes out on opening the tap is The pressure of water [...]
In the given figure, the velocity v3 will be
18
Sep
In the given figure, the velocity v3 will be In the given figure the velocity v3 will be September 18, 2020 Category: Arihant Physics by D.C Pandey , Chapter 13 - Fluid Mechanics , Volume 1 ,