For which of the following sets are the units fundamental?
Area, length and volume
Impulse, mass and time
Length, time and mass
Velocity, distance and time
Volume, mass and density
Correct answer is C
No explanation has been provided for this answer.
0.53
0.83
1.20
1.50
1.88
Correct answer is E
No explanation has been provided for this answer.
2.0 × 104J
1.0 × 104J
5.0 × 103J
4.0 × 103J
2.0 × 102J
Correct answer is A
No explanation has been provided for this answer.
Evaporation of a liquid produces cooling of the liquid because the
attraction between the vapour molecules and the liquid molecules is great
average kinetic energy of the liquid is reduced
density of the liquid decreases
vapour pressure above the liquid rises
volume of the liquid decreases
Correct answer is B
No explanation has been provided for this answer.
Which of the following instruments can be used to measure e.m.f. most accurately.
Ammeter
Galvanometer
Metre bridge
Potentiometer
Voltmeter
Correct answer is D
No explanation has been provided for this answer.