What is the least possible error encountered when taking measurement with a meter rule?
Calculate the escape velocity of a satellite launched from the earth’s surface if the radius of the earth is 6.4×106m
The energy in the nucleus of atoms produce heat which can be used to generate
A. Kinetic energy
B. Mechanical energy
C. Electrical energy
D. Potential energy
What is the equivalent of 20K in Celsius scale?
Heat transfer by convection in a liquid is due to the
A. Latent heat of vaporization of the liquid
B. Increased vibration of the molecules of the liquid about theit mean position
C. Variation of density of the liquid
D. Expansion of the liquid as it is heated
In a compound microscope, the objective and the eye piece focal lengths are
A. At infinity
D. The same