A. pykometer
B. pyrometer
C. photometer
D. potentiometer
A. Inertia
B. Zero gravity
C. Centre of gravity
D. Acceleration
A. sound energy
B. radio energy
C. mechanical energy
D. electrical energy
A. 0°C
B. 0°F
C. 372°C
D. 273°C
A. at which a person escapes an accident
B. that is lost on account of the use of belting
C. that a space satellite must attain to escape from the earth’s gravitational field
D. which a motor cyclist must attain to escape air resistance
A. Alfred Einstein
B. Ernest Lawrence
C. Cavendish
D. W.H. Carothers
A. bifocal glasses
B. cylindrical lenses
C. concave spherical lenses
D. convex lenses
A. Marconi
B. Mendel
C. Einstein
D. Kepler
A. Newton
B. Cavendish
C. Galileo
D. Marconi
A. nuclear explosion
B. human effort
C. any movement of an object
D. water power