A vertical string, suspended from a fixed point and havin...
A vertical string, suspended from a fixed point and having a small mass attached to the free end is set into oscillations. Which of the following statements about the system are correct? i. The potential energy of the mass is a minimum at the middle of the swing ii. Its kinetic energy is a maximum at the middle of the swing iii. The sum of the potential and kinetic energies is constant throughout the swing
i,ii and iii
i and ii only
ii and iii only
i and iii only
Correct answer is C
No explanation has been provided for this answer.
The rise or fall of a liquid in a narrow tube is because of the ...
Which of the following statements about radioactivity are true? i. alpha particle is positively c...
Which of the following radiations constitutes a stream of electrons? ...
Stars which appear single to the naked eye but are double when seen through a telescope are ...
If the refractive index of water is 1.33, what is the critical angle for a water-air boundary? ...
The rate of cooling of a heated quantity of liquid in an enclosure depends on the ...
Which of the following is emitted in a process of natural radioactivity? ...