Chapters Search Classes About Free demo class

Home › Electromagnetic Waves › Q 12-08-017

Electromagnetic Waves question for NEET / JEE Main, with solution

Q 12-08-017NEETJEE MainEasy

The waves used in night-vision devices and TV remote controls are

Answer: (B) infrared

Warm bodies emit infrared, which night-vision devices detect. Remote controls use infrared LEDs.

Solution by Sreeraj P, M.Sc Physics

← Previous Next question →

Stuck on Electromagnetic Waves?Book a free demo class with Sreeraj Sir. Private and batch classes online, in English or Malayalam.

Book on WhatsApp

More Electromagnetic Waves questions

The ozone layer in the atmosphere protects life on Earth mainly by absorbingQ 12-08-018NEET, JEE MainEasy
In an electromagnetic wave in free space, the amplitude of the magnetic field is 5 × 10^-8 T. The amplitude of the electric field isQ 12-08-019NEET, JEE MainMedium
The speed of an electromagnetic wave in a medium of relative permittivity 4 and relative permeability 1 isQ 12-08-020NEET, JEE MainMedium
The electric field of a plane EM wave is E_y = 30(2 × 10^7t - kx) V/m. The wave number k and wavelength areQ 12-08-021NEET, JEE MainMedium
The peak electric field of sunlight at the Earth is about 1000 V/m. The average intensity of the radiation is about (c = 3 × 10^8 m/s, ε_0 = 8.85 ×…Q 12-08-022NEET, JEE MainMedium
An EM wave of intensity 6 W/cm^2 falls normally on a perfectly reflecting surface. The radiation pressure on it isQ 12-08-023NEET, JEE MainMedium

NCERT chapter-wise NEET and JEE physics questions with step-by-step solutions, and online physics coaching.

Practice

All chapters
Search questions
FAQ

Contact

+91 70121 51304
+91 88914 18892
pitheorylearning@gmail.com

PiTheory

Classes and fees
About the faculty
Privacy policy

© 2026 PiTheory Learning, BangaloreAll solutions written and checked by Sreeraj P