When radiations of frequency `10^(15) `Hz is incident on certain surface, no photoemission takes place. What does this statement mean ?

The work function of caesium metal is 2.14 eV. When light of frequency 6 xx 10^14 Hz is incident on the metal surface, photomission of electrons occurs. What is the stopping potential.

The work function of caesium metal is 2.14 eV. When light of frequency 6 xx 10^14 Hz is incident on the metal surface, photomission of electrons occurs. What is the maximum speed of the emitted photoelectrons?

The work function of caesium metal is 2.14 eV. When light of frequency 6 xx 10^14 Hz is incident on the metal surface, photomission of electrons occurs. What is the maximum kinectic energy of the emitted electrons.

Crystalline solids are anistropic in nature. What does this statement mean?

The weight of an object on the surface of earth is 9.8 N. What does this statement mean?

If high waves of frequency 8.8 xx 10^(14) Hz is incident on a metal surface of thresold frequency 4 xx 10^(14) Hz, then determine the value of stopping potential (cut-off Potential) (Given h=6.6 xx 10^(-34) Js and e = 1.6 xx 10^(-19)C)