Choose the wrong option.
 

1.	Inertial mass is a measure of the difficulty of accelerating a body by an external force whereas gravitational mass is relevant in determining the gravitational force on it by an external mass.
2.	That the gravitational mass and inertial mass are equal is an experimental result.
3.	That the acceleration due to gravity on the earth is the same for all bodies is due to the equality of gravitational mass and inertial mass.
4.	Gravitational mass of a particle-like proton can depend on the presence of neighbouring heavy objects but the inertial mass cannot.

Particles of masses 2M, m and M are respectively at points A, B and C with $AB=\frac{1}{2}\left(BC\right)$. The mass m is much-much smaller than M and at time t = 0, they are all at rest as given in the figure. At subsequent times before any collision takes place,

1. m will remain at rest.

2. m will move towards M.

3. m will move towards 2M.

4. m will have oscillatory motion.

The following are the given statements:
 

Choose the correct alternatives:

1. (b, d)

2. (a, c)

3. (c, d)

4. (a, c, d)

If the law of gravitation, instead of being inverse square law, becomes an inverse cube law:

Choose the correct alternatives:

1. (a, d)

2. (a, c)

3. (c, d)

4. (b, d)

If the mass of the sun were ten times smaller and gravitational constant G were ten times larger in magnitude. Then,
 

Choose the correct alternatives:
1. (a, b, c)

2. (a, d)

3. (b, c, d)

4. (a, c, d)

If the sun and the planets carried huge amounts of opposite charges, then:

Which of the above statements is/are correct?
1. (a, b, c)
2. (a, d)
3. (b, c, d)
4. (a, c, d)

There have been suggestions that the value of the gravitational constant G becomes smaller when considered over a very large time period (in billions of years) in the future. If that happens, for our earth,
 

Choose the correct alternatives:

1. (a, c)

2. (a, d)

3. (c, d)

4. (a, b)

Supposing Newton’s law of gravitation for gravitation forces $F_1$ and $F_2$ between two masses $m_1$ and $m_2$ at positions $r_1$ and $r_2$ read

$F_1=-F_2=-\frac{r_{12}}{r_{12}^3}G{M^2}_0{\left(\frac{m_1{m}_2}{M_0^2}\right)}^n$

where, $M_0$ is a constant of the dimension of mass, $r_{12}=r_1-r_2$ and n is a number. In such a case,
 

Choose the correct alternatives:

1. (a, b, c)

2. (a, d)

3. (b, c, d)

4. (a, c, d)

The following are the given statements:
 

Choose the correct alternatives:

1. (a, c)

2. (a, d)

3. (b, c, d)

4. (a, c, d)

In our solar system, the interplanetary region has chunks of matter (much smaller in size compared to planets) called asteroids. They: