A charge of 2C experiences a force 2000N in a uniform electric field. In this fieldthe potential
difference between two points separated by a distance 1cm is
The half-life of a certain element is 3.5 days at STP. If the temperature is doubled and
pressure is reduced to half then half-life of the same element will be:
Two charges of equal magnitudes and at a distance r exert a force F on each other. If the charges
are halved and distance between them is doubled, then the new force acting on each charge is:
If the radius of the circular path of particle going around the circle is doubled without changing its frequency of
rotation, then centripetal force on it is.