Which of the units of the following physical quantities a...
Which of the units of the following physical quantities are derived?
I. Area
II. Thrust
III. Pressure
IV. Mass
I, II, III and IV
I, II, and III only
I, II, and IV only
I and IV only
Correct answer is B
Only 'mass' is a fundamental quantity
Which of the following statements about the atom is/are correct? I. Energy is needed to remove el...
Which of the following will reduce the frequency of oscillation of a simple pendulum?...
A radioactive element has a half life of 4 days. The fraction that has decayed in 16 days is?...