Download Aptitude Crack
img not found img not found

Electronic Devices and Circuits - Engineering

Q1:

Assertion (A): The amount of photoelectric emission depends on the intensity of incident light. Reason (R): Photo electric emission can occur only if frequency of incident light is less than threshold frequency.

A Both A and R are true and R is correct explanation of A

B Both A and R are true but R is not a correct explanation of A

C A is true but R is false

D A is false but R is true

ANS:C - A is true but R is false

Photo electric emission occurs only if frequency is higher than threshold frequency thus R is wrong.