Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AP EAMCET202021 Sep 2020Evening ShiftPhysicsElectromagnetic WavesActual

Pick out the longest wavelength from the following types of radiations.

Options

  1. AVisible blue light
  2. BUltraviolet light
  3. CX-rays
  4. DVisible red light

Correct answer

D. Visible red light

Step-by-step solution

Ultraviolet light is electromagnetic radiation with a wavelength shorter than that of visible light, but longer than ( X )-rays. ( _ red > _ blue > _ UV > _ X -ray ) Hence, visible red light has longest wavelength.

Practice Electromagnetic Waves on Quantrex Academy →

More from Electromagnetic Waves

If ₀ is the permeability of free space and ₀ permittivity of free space then the dimension for ( ₀ , ₀)^ 1/2 is : 2026Which of the following is incorrect for displacement current 2026Match the following Maxwell's equations: (The symbols used here have their usual meanings) List-I List-II (a) Gauss' law for electrostatics (i) E d A = Q ₀ (b) Gauss' law for magne 2026What range of electromagnetic spectrum is considered as light? 2026A parallel plate capacitor with circular plates of radius R is being charged as shown in the figure. Let B(r) be the induced magnetic field at a distance r from the central axis be 2026An electromagnetic wave travels from vacuum into a non-magnetic dielectric medium with permittivity = 4 ₀ . If the ratio (E₀/B₀) of the electric field amplitude E₀ to the magnetic 2026Among the following, the waves responsible for energy transfer in vacuum are 2026If the magnetic field in a plane progressive wave is represented by the equation B _ y =2 10⁻⁷ (0.5 10^3 x+1.5 10¹¹ t ) T , then the frequency of the wave is (In the equation time 2025 Full Electromagnetic Waves list All AP EAMCET PYQs