# A $$60$$ kg man pushes a $$40$$ kg man by a force of $$60$$ N. The $$40$$ kg man has pushed the other man with a force of: 1. $$40$$ N 2. $$0$$ 3. $$60$$ N 4. $$20$$ N

Subtopic:  Newton's Laws |
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A neutron exerts a force on a proton which is

(a) gravitational

(b) electromagnetic

(c) nuclear

(d) weak

Choose the correct option:

1. (a) and (b)

2. (a) and (c)

3. (b) and (c)

4. (a) and (d)

Subtopic:  Application of Laws |
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A proton exerts a force on a proton which is

(a) gravitational

(b) electromagnetic

(c) nuclear

(d) weak

Choose the correct option:

1. (a), (b) and (c)

2. (b), (c) and (d)

3. (a) and (b)

4. (b) and (c)

Subtopic:  Types of Forces |
65%
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Mark the correct statements :

(a) The nuclear force between two protons is always greater than the electromagnetic force between them

(b) The electromagnetic force between two protons is always greater than the gravitational force between them

(c) The gravitational force between two protons may be greater than the nuclear force between them

(d) Electromagnetic force between two protons may be greater than the nuclear force acting between them

Choose the correct option:

1. (a), (b) and (c)

2. (b), (c) and (d)

3. (a), (b) and (d)

4. All of these

Subtopic:  Types of Forces |
51%
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If all matter were made of electrically neutral particles such as neutrons,

(a) there would be no force of friction

(b) there would be no tension in the string

(c) it would not be possible to sit on a chair

(d) the earth could not move around the sun

Choose the correct option:

1. (a), (b) and (c)

2. (a), (c) and (d)

3. (b), (c) and (d)

4. All of these

Subtopic:  Types of Forces |
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Which of the following systems may be adequately described by classical physics?

 a. motion of a cricket ball b. motion of a dust particle c. a hydrogen atom d. a neutron changing to a proton

Choose the correct option:

 1 (a) and (b) 2 (b) and (c) 3 (c) and (d) 4 (a) and (d)
Subtopic:  Newton's Laws |
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The two ends of a spring are displaced along the length of the spring. All displacements have equal magnitudes. In which case or cases the tension or compression in the spring will have a maximum magnitude?

 a. the right end is displaced towards right and the left end towards left b. both ends are displaced towards right c. both ends are displaced towards left d. the right end is displaced towards left and the left end towards right

Choose the correct option:

 1 (a) and (b) 2 (b) and (c) 3 (c) and (d) 4 (a) and (d)
Subtopic:  Spring Force |
74%
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Action and reaction

(a) act on two different objects
(b) have equal magnitude
(c) have opposite directions
(d) have resultant zero

Choose the correct option:

1. (a) and (b)
2. (b) and (c)
3. (a), (b) and (c)
4. All of these

Subtopic:  Newton's Laws |
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A body of weight $$\mathrm{w}_{1}$$ is suspended from the ceiling of a room through a chain of weight $$\mathrm{w}_{2}.$$The ceiling pulls the chain by a force:

 1 $$\mathrm{w}_{1}$$ 2 $$\mathrm{w}_{2}$$ 3 $$\mathrm{w}_{1}+\mathrm{w}_{2}$$ 4 $$\dfrac{\text w_{1}+\text w_{2}}{2}$$
Subtopic:  Newton's Laws |
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When a horse pulls a cart, the force that helps the horse to move forward is the force exerted by:

 1 the cart on the horse. 2 the ground on the horse. 3 the ground on the cart. 4 the horse on the ground.

Subtopic:  Newton's Laws |
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