MCQ
Wavefront means
  • All particles in it have same phase
  • B
    All particles have opposite phase of vibrations
  • C
    Few particles are in same phase, rest are in opposite phase
  • D
    None of these

Answer

Correct option: A.
All particles in it have same phase
a
(a)Wavefront is the locus of all the particles which vibrates in the same phase.

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

The variation of magnetic susceptibility $(\chi )$with temperature for a diamagnetic substance is best represented by
If the distance of the earth from Sun is $1.5 \times 10^6\,km$. Then the distance of an imaginary planet from Sun, if its period of revolution is $2.83$ years is $.............\times 10^6\,km$
A boy standing on the footpath tosses a ball straight up and catches it. The driver of a car passing by moving with uniform velocity sees this.The trajectory of the ball as seen by the driver will be
$n$ identical bulbs, each designed to draw a power $p$ from a certain voltage supply, are joined in series across that supply. The total power which they will draw is
Carbon, silicon and Germanium atoms have four valence electrons each. Their valence and conduction band are separated by energy band gaps represented by $(Eg)_C. (Eg)_{Si}$ and $(Eg)_Ge$ respectively. Which one of the following relationship is true in their case
Two resistors of $10\, \Omega$ and $20\, \Omega$ and an ideal inductor of $10\, H$ are connected to a $2\, V$ battery as shown. The key $K$ is inserted at time $t = 0$. The initial $(t = 0)$ and final ($t \rightarrow \infty$ ) currents through battery are
A car of mass $ ‘m’ $ is driven with acceleration $ ‘a’ $ along a straight level road against a constant external resistive force $ ‘R’.$  When the velocity of the car is $‘V’, $ the rate at which the engine of the car is doing work will be
A $50 \;kg$ girl wearing high heel shoes balances on a single heel. The heel is circular with a diameter $1.0 \;cm$. What is the pressure exerted by the heel on the horizontal floor ?
Lux is a unit of
A galvanometer $G$ deflects full scale when a potential difference of $0.50 $ $V$ is applied. The internal resistance of the galvanometer $r_g$ is $25$ $ohms$. An ammeter is constructed by incorporating the galvanometer and an additional resistance $R_S$. The ammeter deflects full scale when a measurement of $2.0$ $A$ is made. The resistance $R_S$ is closest to : ................. $\Omega$