NEET - Physics Mock Tests

A satellite orbits Earth at a height h = R above the surface, where R is Earth's radius. Its orbital velocity is (g = acceleration due to gravity on Earth surface):

A stone tied to a string of length L is whirled in a vertical circle. The minimum velocity at the lowest point to complete the circle is:

Two planets of masses m₁ and m₂ orbit each other in circular orbits with separation d. The total angular momentum of the system about their center of mass is proportional to:

In a transistor, the current amplification factor β = 50. If the collector current changes by 2 mA, the change in base current is:

A car moves on a level circular track of radius 80 m. If the coefficient of friction between the tires and the road is 0.5, the maximum speed at which the car can travel without skidding is approximately: (g = 10 m/s²)

A wire of resistance R is stretched to double its length. The new resistance will be:

A concave mirror of focal length f produces a virtual image that is 3 times the size of the object. The object distance is:

In a double slit experiment, fringe width beta = lambda D/d. If d is halved, beta: