Gravitation force of earth is:
A. 9.80 m/s²
B. 7.21 m/s²
C. 1.62 m/s²
D. None of these
The mass-energy relation is the outcome of:
A. Quantum theory
B. General theory of relativity
C. Special theory of relativity
D. None of these
Mach number is used in connection with the speed of:
A. Ship
B. Light
C. Sound
D. aircraft
Rutherford in his atomic model could not explain behavior of:
A. Electrons
B. Protons
C. Neutrons
D. Neutrino
Joule Thomson effect is based upon:
A. Sudden compression of gases
B. Sudden expansion of gases
C. Cooling of gases
D. Heating of gases
Medium which sends signal from source to destination is known as:
A. Transmitter
B. Transmission channel
C. Receiver
D. Hardware
Which one of the following is not a radioactive element:
A. Cadmium
B. Thorium
C. Radium
D. Uranium
The most suitable unit for expressing nuclear radius is:
A. Angstrom
B. Micro
C. Nano meter
D. Fermi
The turning effect of force is called:
A. Moment
B. Momentum
C. Torque
D. None of these
Which of the following waves have smallest velocity in vacuum:
A. Ultraviolet
B. Sound
C. Infra-Red
D. Micro
