Practicing Success
Practicing Success
CUET Preparation Today
Assertion (A) : Work function of aluminum is 4.2 eV. If two photons each of energy 2.5 eV strikes on a piece of aluminum, the photo electric emission does not occur. Reason (R) : In photo electric effect a single photon interacts with a single electron and electron is emitted only if energy of each incident photon is greater then the work function. |
Both (A) and (R) are true and (R) is the correct explanation of (A). Both (A) and (R) are true but(R) is NOT the correct explanation of (A). (A) is true but (R) is false. Both (A) and (R) are false. |
Both (A) and (R) are true and (R) is the correct explanation of (A). |
A single photon of energy more than the work function is required to emit the electron. |
