If the diameter of the cross - section of a wire is decreased by 5%, by what percentage should the length be increased so that the volume remains the same ?

When pressure increases by 2% , what is the percentage decrease in the volume of a gas, assuming Boyle's law is obeyed ?

If an iron wire is drawn to decrease its radius by 0.5 % . Then percentage of increase in its resistance will be

The area of cross-section of a wire is 10^(-5) m^2 when its length is increased by 0.1% a tension of 1000N is produced. The Young's modulus of the wire will be

Two stretched wires of same length, diameter and same material are in unison. The tension in one is increased by 2% and 2 beats per second are heard. What was the frequency of the note produced when they were in unison

If a copper wire is stretched to increase its length by 0.1% . Then percentage of increase in its resistance will be