The modulus of elasticity is dimensionally equivalent to
strain
force
stress
coefficient of viscosity
C.
stress
The modulus of elasticity is dimensionally equivalent to stress.
Radius of an air bubble at the bottom of the lake is r and it becomes 2r when the air bubble rises to the top surface of the lake. If P cm of water be the atmospheric pressure, then the depth of the lake is
2P
8P
4P
7P
A manometer connected to a closed tap reads 4.5 × 105 Pa. When the tap is opened the reading of the manometer falls to 4 x 105 Pa. Then the velocity of flow of water is
7 ms-1
8 ms-1
10 ms-1
12 ms-1
What is the velocity v of a metallic ball of radius r falling in a tank of liquid at the instant when its acceleration is one-half that of a freely falling body ? (The densities of metal and of liquid are ρ and σ respectively, and the viscosity of the liquid is η)
The value of for one mole of an ideal gas is nearly equal to
2 J mol-1 K-1
8.3 mol-1 K-1
4.2 mol-1 K-1
2 cal mol-1 K-1
The volume of a metal sphere increases by 0.24 % when its temperature is raised by 40°C. The coefficient of linear expansion of the metal is
2 × 10-5
6 × 10-5
18 × 10-5
1.2 × 10-5
The temperature of equal masses of three different liquids A, B and C are 12°C, 19°C and 28°C respectively. The temperature when A and B are mixed is 16°C and when B and C are mixed is 23°C. The temperature when A and C are mixed is
18.2°C
22°C
20.2°C
24.2°C
A particle starts SHM from the mean position. Its amplitude is a and total energy E. At one instant its kinetic energy is . Its displacement at that instant is
A particle executes linear simple harmonic motion with an amplitude of 2 cm. When the particle is at 1 cm from the mean position the magnitude of its velocity is equal to that of its acceleration. Then its time period in second is