?A permanent magnet repels
1). ferromagnetic substances only?
2). diamagnetic substances only
3). paramagnetic susstances only
4). both paramagnetic and diamagnetic substances
1. ______ is the perpendicular distance between point of application of force and axis of rotation.
2. Conversion of heat into electrical is achieved by using :
5. What is the minimum escape velocity of rocket to be launched into space
8. Nuclear Fission is caused by the impact of
9. Which of the following is a good conductor of heat but a bad conductor of electricity ?