Consider the following statements :1. There is no net moment on a body which is in equilibrium.2. The momentum of a body is always conserved.3. The kinetic energy of an object is always conserved.Which of the statements given above is/are correct?

Physics
Consider the following statements :1. There is no net moment on a body which is in equilibrium.2. The momentum of a body is always conserved.3. The kinetic energy of an object is always conserved.Which of the statements given above is/are correct?

1, 2 and 3

1 only

1 and 2 only

2 and 3 only

1, 2 and 3

1 only

1 and 2 only

2 and 3 only

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Physics
Solids have definite shapes.This is because

The forces of cohesion are very large

The forces of adhesion are less

The forces of adhesion are large

The forces of cohesion of the molecules within are very much less in them

The forces of cohesion are very large

The forces of adhesion are less

The forces of adhesion are large

The forces of cohesion of the molecules within are very much less in them

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Physics
On a rainy day, small oil films on water show brilliant colours. This is due to

dispersion

polarization

interference

diffraction

dispersion

polarization

interference

diffraction

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Physics
Why is weightlessness experienced while orbiting the earth in space ships ?

Zero gravity

Inertia

Acceleration

None of these

Zero gravity

Inertia

Acceleration

None of these

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Physics
A body of mass 5 kg accelerates from 12 m/s to 20 m/s in 4 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).

20

40

10

80

20

40

10

80

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Physics
The force that generates wind is

Pressure gradient force

Coriolis force

Centrifugal force

Gravity force

Pressure gradient force

Coriolis force

Centrifugal force

Gravity force

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Physics

Physics Consider the following statements :1. There is no net moment on a body which is in equilibrium.2. The momentum of a body is always conserved.3. The kinetic energy of an object is always conserved.Which of the statements given above is/are correct?

Physics Solids have definite shapes.This is because

Physics On a rainy day, small oil films on water show brilliant colours. This is due to

Physics Why is weightlessness experienced while orbiting the earth in space ships ?

Physics A body of mass 5 kg accelerates from 12 m/s to 20 m/s in 4 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).

Physics The force that generates wind is

Physics
Consider the following statements :1. There is no net moment on a body which is in equilibrium.2. The momentum of a body is always conserved.3. The kinetic energy of an object is always conserved.Which of the statements given above is/are correct?

Physics
Solids have definite shapes.This is because

Physics
On a rainy day, small oil films on water show brilliant colours. This is due to

Physics
Why is weightlessness experienced while orbiting the earth in space ships ?

Physics
A body of mass 5 kg accelerates from 12 m/s to 20 m/s in 4 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).

Physics
The force that generates wind is