NEET UG 2018 · Physics · Question 14
NEET 2018 Physics, question 14
Question 14 of the NEET 2018 paper (code AA) is a Physics question from Dual Nature of Radiation and Matter. Its idea, Maximum Velocity of Photoelectrons, was asked only this once in NEET 2017–2026. The CBSE official answer key gives option 3.
Updated 2026-10-08
Q14 · Physics
When the light of frequency (where is threshold frequency), is incident on a metal plate, the maximum velocity of electrons emitted is . When the frequency of the incident radiation is increased to , the maximum velocity of electrons emitted from the same plate is . The ratio of to is
- 14 : 1
- 21 : 4
- 31 : 2Official answer
- 42 : 1
Official answer: option 3 · CBSE official answer key
Same idea
The only question on Maximum Velocity of Photoelectrons
No other NEET paper from 2017–2026 tested this exact idea.
Maximum Velocity of Photoelectrons: every question and how it was framed
The chapter
Dual Nature of Radiation and Matter in ten years of NEET
20 questions from 2017–2026, asked in 10 of 10 papers, about 1.9 a paper. Photoelectric Effect alone had 20.