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Recently Asked Questions

Q.
The ratio of velocities of a planet at perigee and apogee $\frac{v_p}{v_a}$ is equal to -
Option: 1
1

Option: 2
$\frac{1-e}{1+e}$

Option: 3
$\frac{1+e}{1-e}$

Option: 4
$\frac{1+e^2}{1-e^2}$

Q.
A car moves on a concave bridge of radius R then the maximum reaction force on the car will be:

[ let the mass of the car be m]

Option: 1
mg

Option: 2
$\frac{mv^{2}}{R}$

Option: 3
$mg - \frac{mv^{2}}{R}$

Option: 4
$mg + \frac{mv^{2}}{R}$

Q.
Three block m₁= 1kg , m₂ = 1.5kg and m₃ = 2kg are in contact with each other on frictionless surface as shown in figure. What will be the contact force between m₂ and m₃ if the value of F is 18N?

Option: 1
10N

Option: 2
8N

Option: 3
6N

Option: 4
12N

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