If we add 8 kg load to the hanger of sonometer, the fundamental frequency becomes 3 times of its initial value. The initial load in the hanger was

The kinetic energy of a body becomes 4 times its initial value. The new lines momentum will be

The fundamental frequency of a sonometer wire is 100 Hz. If a weigth of 3 kg is added to the hanger, the frequency of the wire is doubled. What was the initial load on the hanger ? [ The weight of the hanger is included in the load . ]

The transition, so that the de–Broglie wavelength of electron becomes 3 times of its initial value in H e ^(+) ion will be:

The kinetic energy of a body becomes four times its initial value.The new linear momentum will be:

On increasing the tension in the string by 10 kg wt, the fundamental frequency increases in the ratio of 1 : 2. Calculate the initial tension in the string.

A sonometer wire stretched by a tension of 1.5kg weigth, has the fundamental frequency of 256 Hz. How much addition weigth should be placed on the hanger. In order to produce its octave ?