NEET UG 2018 · Physics · Question 18
NEET 2018 Physics, question 18
Question 18 of the NEET 2018 paper (code AA) is a Physics question from Electromagnetic Waves. Its idea, Transverse Nature and E x B Direction, was asked 3 times, in 2018, 2021 and 2025, across NEET 2017–2026. The CBSE official answer key gives option 2.
Updated 2026-10-08
Q18 · Physics
An em wave is propagating in a medium with a velocity . The instantaneous oscillating electric field of this em wave is along +y axis. Then the direction of oscillating magnetic field of the em wave will be along
- 1– y direction
- 2+ z directionOfficial answer
- 3– z direction
- 4– x direction
Official answer: option 2 · CBSE official answer key
Same idea
Transverse Nature and E x B Direction, in other papers
NEET asked this idea 3 times, in 2018, 2021 and 2025. The other 2 questions below.
- 2025 Q9The electric field in a plane electromagnetic wave is given by V/m. Then expression for the…One-line MCQ · Medium
- 2021 Q12For a plane electromagnetic wave propagating in -direction, which one of the following combination gives the correct possible…One-line MCQ · Medium
Transverse Nature and E x B Direction: every question and how it was framed
The chapter
Electromagnetic Waves in ten years of NEET
18 questions from 2017–2026, asked in 10 of 10 papers, about 1.7 a paper. Electromagnetic Waves alone had 18.