Duration: 4:58

10 views

0

Match the Columns I and II.
Column I
Column II
(A) Field emission
(1) Heat is supplied to the metal surface
(B) Photoelectric
(2) Electric field is applied emission to the metal surface
(C) Thermionic emission
(3) Light of suitable frequency illuminates the metal surface
(D) Secondary emission
(4) Striking fast moving electrons on the metal surface.
(a) (A) \( \rightarrow \) (2); (B) \( \rightarrow \) (3); C \( \rightarrow \) (1); (D) \( \rightarrow \) (4)
(b) (A) \( \rightarrow \) (1); (B) \( \rightarrow \) (3); C \( \rightarrow \) (2); (D) \( \rightarrow \) (4)
(c) (A) \( \rightarrow \) (4); (B) \( \rightarrow \) (1); C \( \rightarrow \) (3); (D) \( \rightarrow \) (2)
(d) (A) \( \rightarrow \) (4); (B) \( \rightarrow \) (3); C \( \rightarrow \) (2); (D) \( \rightarrow \) (1)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live