Four Fundamental Forces

Q. Two point charges $Q_1$ and $Q_2$ exerts force $F$ on each other, when kept at certain distance apart. If the charge on each particle is halved and the distance between them is doubled, then the new force between the two particles would be

1. $\frac{F}{2}$
2. $\frac{F}{16}$
3. $\frac{F}{4}$
4. $\frac{F}{8}$

Q. When John Cena shook hands with Randy Orton, what kind of force did they exert?

1. Gravitational
2. Electromagnetic
3. Strong Nuclear
4. Weak Nuclear

Q. Ten coins are placed on top of each other on a horizontal table. If the mass of each coin is $10\text{gm}$, what is the magnitude and direction of the force on the $7th$ coin (counted from the bottom) due to all the coins above it? Take $g=10{\text{m/s}}^2$

1. $0.3\text{N}$ downwards
2. $0.3\text{N}$ upwards
3. $0.7\text{N}$ downwards
4. $0.7\text{N}$ upwards

Q. Let E, G and N represent the magnitudes of electromagnetic, gravitational and nuclear forces between two electrons at a given separation. Then

1. N > E > G
2. E > N > G
3. G > N > E
4. E > G > N

Q. When John Cena shook hand with Randy Orton, what kind of force they exerted?

1. Gravitational
2. Electromagnetic
3. Nuclear
4. Weak

Q. Let E, G and N represent the magnitudes of electromagnetic, gravitational and nuclear forces between two electrons at a given separation. Then

1. N > E > G
2. E > N > G
3. G > N > E
4. E > G > N