A. Spin motion
B. Center of gravity
C. Axis of rotation
D. Centre of mass
Explanation: The imaginary line is called the axis of rotation.
A. Screw gauge
B. Barometer
C. Stethoscope
D. Hygrometer
Explanation: Atmospheric pressure is measured with a barometer.
A. 299792458 m/s
B. 150000000 m/s
C. 1000000000 m/s
D. 300000000 m/s
Explanation: The speed of light in a vacuum is 299
A. Fuel cell
B. Photo voltaic cell
C. Both a & b
D. None of these
A. Pascal
B. Joule
C. Tesla
D. Henry
A. Faraday
B. Wander wall
C. Coulomb
D. None of these
A. Speed
B. Acceleration
C. Velocity
D. Retardation
Explanation:
A. Displacement
B. Velocity
C. Speed
D. Acceleration
Explanation: Speed is a scalar quantity.
A. Mechanical energy
B. Chemical energy
C. Thermal energy
D. Nuclear energy
Explanation: A battery is a device that stores chemical energy and converts it to electrical energy.
A. Albert einstein
B. Galileo galilei
C. Isaac newton
D. Johannes kepler
Explanation: Gravity was discovered by Isaac Newton.