Tag: Physics Mcq

(A) 0.041 eV
(B) 0.41 eV
(C) 4.1 eV
(D) 41 eV

(A) Photons come out of a metal when it is hit by a beam of electrons
(B) Photons come out of the nucleus of an atom under the action of an electric field
(C) Electrons come out of a metal with a constant velocity which depends on the frequency and intensity of incident radiation
(D) Electrons come out of a metal with different velocities not greater than a certain value which depends only on the frequency of the incident light and not on its intensity

(A) 1.4 eV
(B) 1.7 eV
(C) 5.4 eV
(D) 6.8 eV

(A) 1.21 Pm
(B) 0.51 Pm
(C) 2.43 Pm
(D) None

(A) both half cycles
(B) positive half
(C) negative half
(D) one half input

(A) half wave rectification
(B) quarter wave rectification
(C) full wave rectification
(D) both A and B

(A) reverse biased
(B) forward biased
(C) potential barrier
(D) both a and b

(A) half wave amplification
(B) full wave rectification
(C) half wave rectification
(D) full wave amplification