Physics Questions

Which of the following device is used to measure humidity?

Calculate the frequency (in Hz) of a sound wave of wavelength 5 m travelling with a speed of 360 m/s.

Optical fiber works on the principle of -

Weight (W) of a body can be given by the formula

Which of the following is an example of thermoplastics?

Assuming that the charge of an electron is 1.6 x 10-19 C, the number of electrons passing through a section of wire per second when the wire carries a current of 1 A is

Rate of work done is _______.

When we see an object, the image formed on the retina is ________