A ray of light is incident on a transparent medium at polarising angle. What is the angle between the reflected ray and the refracted ray?
How does the focal length of a convex lens change with increase in wavelength of the incident light?
With increase in wavelength of the light, the focal length of the convex lens increases.
With reference to the photoelectric effect, what is meant by the threshold wavelength?
Half life of a certain radioactive element is 3.465 days. Find its disintegration constant.
Binding energy per nucleon for helium nucleus is 7.0 MeV. Find the value of mass defect for helium nucleus.