Electromagnetic Waves

A parallel-plate capacitor of $50\ \mu\text{F}$ contains a dielectric slab of constant ($k$) with the same dimensions. If a time-varying potential difference is applied at a rate of $50\ \text{V/s}$. What is the…

The magnetic field in a travelling electromagnetic wave has a peak value of $20 \mathrm{nT}$. The peak value of electric field strength is

Column - I lists the waves of the electromagnetic spectrum. Column - II gives approximate frequency range of these waves. Match Column - I and Column - II and choose the correct match from the given choices. No.Column…

Match List I with List II : List I (Electromagnetic wave)List II (Production)A. MicrowaveI. Electrons in atoms emit light when they move from a higher energy level to a lower energy levelB. Visible lightII. Radioactive…

The following table presents the part of the electromagnetic spectrum and their corresponding major applications. Part of the electromagnetic spectrumApplicationsP. MicrowaveI. For purifying the waterQ. UV raysII. For…

Match List - I with List - II: List - I (Electromagnetic waves) List - II (Wavelength) (a) AM radio waves (i) $10^{-10}m$ (b) Microwaves (ii) $10^{2}m$ (c) Infrared radiations (iii) $10^{-2}m$ (d) X-rays (iv) $10^{-4}m$…

The correct ascending order of the wavelengths of the following electromagnetic waves is Ultraviolet, X-rays, infrared, gamma rays and visible light?

A parallel plate capacitor consists of two circular plates each of radius \(2 \mathrm{~cm}\), separated by a distance of \(0.1 \mathrm{~mm}\). If the potential difference across the plates is varying at the rate of \(5…

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

The device used to detect infrared radiations is

When a metal target is bombarded with high energy electrons, the electromagnetic waves generated are

The structure of solids is investigated by using