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Physics Class 12
Solutions to CBSE Sample Paper - Physics Class 12

Electromagnetic waves with wavelength

  1. λ1 is suitable for radar systems used in aircraft navigation.
  2. λ2 is used to kill germs in water purifiers.
  3. λ3 is used to improve visibility in runways during fog and mist conditions.

Identify and name the part of the electromagnetic spectrum to which these radiations belong.Also arrange these wavelengths in ascending order of their magnitude.



λ 1 -Microwave

λ 2 - ultraviolet

λ 3 - infrared

Ascending order - λ 2 3 1

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.