The work function of a metal is 2.56 x 10^-19J. Calculate the frequency of a photon whose energy is required to eject from the metal an electron with kinetic energy of 3.0ev. [1 eV = 1.6 x 10^-19J, h = 6.6 x 10^-34Js]

Similar Questions

What is the name given to the force of attraction between the nucleons in the nucleus of an atom? ...

2000cm3 of a gas is collected at 27oC and 700mmHg. What is the volume of the gas at standard tempera...

Which of the following is the exclusive property of a transverse wave? ...

I. High thermal capacity. II. High sensitivity. III.Easy readability. IV. Accuracy over a wide ra...

How much heat is emitted when a body of mass 200g cools from 37oC to 31oC? (specific heat capacity o...

Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, t...

A body falls freely under gravity (g = 9.8ms-2) from a height of 40m on to the top of a platform 0.8...

Given three capacitors 0.3μF, 0.5μF and 0.2μF, the joint capacitance when arranged to give minimu...

The volume of a fixed mass of gas is 10cm3 when its pressure is 400cmHg. Determine the volume of the...

An object of mass 20kg slides down an inclined plane at an angle of 30o to the horizontal. The coeff...