Question
A wavefront is an imaginary surface where:
✓
Answer
- Phase is same for all points.
The locus of all particles in a medium, vibrating in the same phase is called wave front.
The direction of propagation of light (ray of light) is perpendicular to the wave front.
A wave front is an imaginary surface where all particles lying on this vibrate 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.
Explore more
Similar questions
The optical fibre works on the principle of :
Water equivalent of a body is measured in$:$
→When the distance between two charges is increased, the potential energy of the charges:
In a PNP transistor working as a common-base amplifier, current gain is 0.96 and emitter current is 7.2 mA. The base current is(a) 0.4 mA(b) 0.2 mA(c) 0.29 mA(d) 0.35 mA
A source of sound moves towards an observer.
- The frequency of the source is increased.
- The velocity of sound in the medium is increased.
- The wavelength of sound in the medium towards the observer is decreased.
- The amplitude of vibration of the particles is increased.
In the circuit, if the forward voltage drop for the diode is $0.5V,$ the current will be
→If half-life of a radioactive atom is 2.3 days, then its decay constant would be(a) 0.1 (b) 0.2(c) 0.3 (d) 2.3
A charged particle in a plasma trapped in a magnetic bottle leaks out after a millisecond. What is the total work done by the magnetic field during the time the particle is trapped?
A wheel of radius 20cm is pushed to move it on a rough horizontal surface. It is found to move through a distance of 60cm on they road during the time it completes one revolution about the centre. Assume that the linear and the angular accelerations are uniform. The frictional force acting on the wheel by the surface is:
- Along the velocity of the wheel.
- Opposite to the velocity of the wheel.
- Perpendicular to the velocity of the wheel.
- Zero.
For an isotropic medium $B, m, H$ and $M$ are related as $($where $B, \mu_0, H$ and $M$ have their usual meaning in the context of magnetic material
→