CUET (UG) entrance exam Question Bank Solutions for Physics

The frequency of x-rays, y-rays and ultraviolet rays are respectively a, b and c. Then:-

The ozone layer absorbs

Following QN ∴ 14, the radiation force on the roof will be

The area to be covered for T.V telecast is doubled then the height of transmitting antenna (T.V tower) will have to be:-

The frequency of e. m waves which is best suited .to observed of radius 3 × 10^–4 his of the order of

Ozone layer above the earth's atmosphere will

Find the photon energy in units of ev for electromagnetic wave if waves length 40 m. Given h = 6.63 × 10^–34 J.

A radio can tune to any station in the 7.5 mHz to 12 MHz band. What is corresponding wave length band.

What is time period of the light for which the eye is most sensitive?

Radio waves of constant amplitude can be generated with.

Threshold frequency for photoelectric effect on sodium corresponds to a wave length 5000. Its work function is ______.

Einstein work on the photoelectric effect provided support for the eqn:-

Who indirectly determined the mass of the electron by measuring the charge of the electrons?

If the frequency of light in a photoelectric experiment is double the stopping potential will

If the energy of photon corresponding to a wavelength of 6000 A° is 3.32 × 10⁻¹⁹ J, the photon energy for a wavelength of 4000 A° will be ______.

The slope of frequency of incident light and stopping potential for a given surface will be

What will be wavelength of a photon of momentum 6.6 × 10^–24 kgms^–1?

What is the momentum of photon of energy 3 mev in kg ms^-1?

Which of the following is/are true for cathode ray

The emission of electron is possible