Who was the first scientist to discover Electrons?
A). Albert Einstein
B). Isaac Newton
C). J.C. Bose
D). J.J Thompson
J.J Thompson
J.J. Thompson was the first scientists to discover electrons.
1. Least audible sound for most of the human ear is :
3. Kilowatt-hour is the unit of :
4. Cloudy nights are warmer compared nights because clouds mainly
5. The sensation of weightlessness in a spacecraft in an orbit is due to the
6. The velocity of heat radiation in vacuum is
7. How much mechanical work must be done to completely melt 1 gram of ice at 0°C ?
8. Newtons first law of motion gives the concept of
9. Electron microscope works on which of the following principles?
10. It is easier to roll a stone up a sloping road than to lift it vertical upwards because