Books by Author Lovekush Kumar
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Recent Articles
A horizontal bridge is built across a river. A student standing on the bridge throws a small ball vertically upwards with a velocity 4 m s^–1. The ball strikes the water surface after 4 s. The height of bridge above water surface is (Take g = 10 m s^–2)
A bullet from a gun is fired on a rectangular wooden block with velocity u. When bullet travels 24 cm through the block along its length horizontally, velocity of bullet becomes u/3 . Then it further penetrates into the block in the same direction before coming to rest exactly at the other end of the block. The total length of the block is ?NEET UG2023
A wire carrying a current I along the positive x-axis has length L. It is kept in a magnetic field B = (2iˆ + 3jˆ – 4kˆ) T. The magnitude of the magnetic force acting on the wire is ?NEET UG2023
Calculate the maximum acceleration of a moving car so that a body lying on the floor of the car remains stationary. The coefficient of static friction between the body and the floor is 0.15 (g = 10 m s^–2). NEET UG2023
10 resistors, each of resistance R are connected in series to a battery of emf E and negligible internal resistance. Then those are connected in parallel to the same battery, the current is increased n times. The value of n is ? NEET UG2023
The resistance of platinum wire at 0°C is 2 ohm and 6.8 ohm at 80°C. The temperature coefficient of resistance of the wire is ? NEET UG2023
The radius of inner most orbit of hydrogen atom is 5.3 × 10^–11 m. What is the radius of third allowed orbit of hydrogen atom? NEET UG2023
Two bodies of mass m and 9m are placed at a distance R. The gravitational potential on the line joining the bodies where the gravitational field equals zero, will be ?NEET UG2023
Find x from first line then put it in second line, answer will be -16Gm/R
Note- net field is zero so E1 -E2 = 0 so E1 = E2 has been taken.
The ratio of radius of gyration of a solid sphere of mass M and radius R about its own axis to the radius of gyration of the thin hollow sphere of same mass and radius about its axis is? NEET UG2023
A vehicle travels half the distance with speed v and the remaining distance with speed 2v. Its average speed is? NEET UG2023
