A shell of mass m is at rest initially. It explodes into three fragments having masses in the ratio 2:2:1. If the fragments having equal masses fly off along mutually perpendicular directions with speed v, the speed of the third (lighter) fragment is ? NEET 2022
A long solenoid of radius 1 mm has 100 turns per mm. If 1 A current flows in the solenoid, the magnetic field strength at the centre of the solenoid is ? NEET 2022
The angular speed of a flywheel moving with uniform angular acceleration changes from 1200 rpm to 3120 rpm in 16 seconds. The angular acceleration in rad/s² is ? NEET 2022
Two hollow conducting spheres of radii R₁ and R₂(R₁>>R₂) have equal charges. The potential would be greater on surface of smaller / bigger sphere ? Decide.
Two resistors of resistance, 100 ohm and 200 ohm are connected in parallel in an electrical circuit. The ratio of the thermal energy developed in 100 ohm resistor to that in 200 ohm resistor in a given time is ? NEET 2022
A body of mass 60 g experiences a gravitational force of 3.0 N when placed at a particular point. The magnitude of the gravitational field intensity at that point is? NEET 2022