Question
Write the definition of wave front.

Answer

"In any medium in which a wave is propagating, if we draw a surface on which all the particles located are in the same phase of vibration, then such surface is called 'wave front'." The wave front of a wave in a homogeneous medium is always perpendicular to the direction of wave propagation.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Two point charges $4\mu\text{C}$ and $-2 \mu\text{C}$  are separated by a distance of 1 m in air. Calculate at what point on the line joining the two charges is the electric potential zero.
At room temperature (27.0°C) the resistance of a heating element is $100\ \Omega.$ What is the temperature of the element if the resistance is found to be $117\ \Omega,$ given that the temperature coefficient of the material of the resistor is $1.70\times10^{-4}\ ^\circ\text{C}^{-1}.$
In a Van de Graaff type generator a spherical metal shell is to be a 15 × 106V electrode. The dielectric strength of the gas surrounding the electrode is 5 × 107Vm–1. What is the minimum radius of the spherical shell required? (You will learn from this exercise why one cannot build an electrostatic generator using a very small shell which requires a small charge to acquire a high potential.)
A potential difference $V$ is applied across the ends of a conductor of length $L$ and diameter $D$. What will be the effect on drift velocity of charge carriers in the conductor when (i) V is made half (ii) L is doubled and (iii) D is made half?
State the types of electric charge. Who coined these names?
Why is the interference pattern not detected, when two coherent sources are far apart?
The ground state energy of hydrogen atom is -13.6 eV. If an electron makes a transition from an energy level-1.51 eV to - 3.4 eV, then calculate the wavelength of the spectral line emitted and name the series of hydrogen spectrum to which it belongs.
If the solenoid in question 5.3 is free to turn about the vertical direction and a uniform horizontal magnetic field of 0.25 T is applied, then what is the magnitude of torque on the solenoid when its axis makes an angle of$30^{\circ}$ with the direction of applied field?
Monochromatic light of frequency $6.0 \times 10^{14} Hz$ is produced by a laser. The power emitted is $2.0 \times 10^{-3} W$. (a) What is the energy of a photon in the light beam? (b) How many photons per second, on an average, are emitted by the source?
In Young’s double-slit experiment using monochromatic light of wavelength λ, the intensities of two sources is I. What is the intensity of light at a point where path difference between wave front is $\lambda / 4$ ?