SureDen
A wave is a disturbance which propagates energy and momentum from one place to the other without the transport of matter.
(1) Necessary properties of the me
The energy to which the human ears are sensitive is known as sound. In general all types of waves are produced in an elastic material medium, Irrespective of whether these are
When two sets of progressive wave trains of same type (both longitudinal or both transverse) having the same amplitude and same time period/frequency/wavelength travelling wit
When a string under tension is set into vibration, transverse harmonic waves propagate along its length. When the length of string is fixed, reflected waves will also exist. T
Organ pipes are the musical instrument which are used for producing musical sound by blowing air into the pipe. Longitudinal stationary waves are formed on account of superimp
Young’s double slit experiment:- (For interference light)
Space Communication:- It refers to sending, receiving and processing of information through space. There are four odes of space communication.
General formula for wavelength
λ =
When two waves of same frequency, same wavelength, same velocity (nearly equal amplitude) moves in the same direction, Their superimposition results in the interference. Due t
The displacement at any time due to any number of waves meeting simultaneously at a point in a medium is the vector sum of the individual displacements due each one of the wav
When sound waves are incident on a boundary between two media, a part of incident waves returns back into the initial medium (reflection) while the remaining is partly absorbe
Electromagnetic Wave theory – given by Clark Maxwell. Main points are
energy is emitted from any source continuously in the form
De-Broglie’s Equation:-
According to de-Broglie a moving particle can be associated with a wave. So the waves associated with a moving materi
(1) When a source is moving in a direction making an angle q w.r.t. the listener : The apparent frequency heard by listener
Hertz produced and detected EM Waves experimentally.
Experimental setup is as shown below.
(1) These waves propagate in the forward direction of medium with a finite velocity.
(2) Energy and momentum are transmitted in the direction of propagation of wave
Interference of light:- “It is the phenomena of redistribution of light energy due to superposition of light waves from two coherent sources.”
Electromagnetic waves
It is a disturbance which carries energy in space due to the simultaneously time varying mutually perpendicular electric and
Expression for Fringe width (β):
EM waves propagate in 3 different moods:-
(1) Ground wave propagation
(2) Sky wave propagation
(3) Line of sight propagation
When a sound wave travels through a medium such as air, water or steel, it will set particles of medium into vibration as it passes through it. For this to happen the medium m
Super position principle:-
“According to this principle, when two or more waves travelling through a medium superimpose each other, a new wav
Transverse nature of EM waves
Microwaves Link à Microwaves are the E. M. Waves of ν = 1GHz to 3 GHz. This is the ν more than that
c = 1/(µ0∈0)1/2
Value comes out to be 2.99 x 108
Velocity of EM
ECG (electro cardio graph):
A permanent record of the electric events occurring during a cardiac cycle, made on a graph paper in the form of a wave
(1) Wavelength : (i) It is the length of one wave.
(ii) Wavelength is equal to the distance travelled by the wave during the time in which any one
Fundamental frequency n = 1
Test Details
Beats are produced with the help of two sound waves on amplitude 3 and 5 units. The ratio of maximum to minimum intensity in the beats is [MP PMT 1999]
Test Details
In stationary waves, antinodes are the points where there is [MP PMT 1996]
Test Details
Which of the property makes difference between progressive and stationary waves [MP PMT1987]
Test Details
The superposition takes place between two waves of frequency f and amplitude a. The total intensity is directly proportional to &
Test Details
There is a destructive interference between the two waves of wavelength λ oming from two different paths at a point. To get maximum sound or constructive interference at that point, the path of one wave is to be increased by &n
Test Details
The speed of a wave in a certain medium is 960 m/sec. If 3600 waves pass over a certain point of the medium in 1 minute, the wavelength is &nbs
Test Details
The path difference between the two waves
y1 = a1 sin (ωt – (2πx/ λ)) and y2 = a2 cos (ωt – (2πx/ λ) + φ) is &nbs
Test Details
The equation of displacement of two waves are given as y1 = 10 sin (3πt + (π /3)); y2 = 5 [sin3 πt + (3)1/2 cos 3 πt]
Then what is the ratio of their amplitudes
Test Details
If two waves of same frequency and same amplitude respectively on superimposition produced a resultant disturbance of the same amplitude the wave differ in phase by &nbs
Test Details
The superposition takes place between two waves of frequency f and amplitude a. The total intensity is directly proportional to
Test Details
Beats are produced with the help of two sound waves on amplitude 3 and 5 units. The ratio of maximum to minimum intensity in the beats is
Test Details
The equation of displacement of two waves are given as y1 = 10 sin (3πt + (π /3)); y2 = 5 [sin3 πt + (3)1/2 cos 3 πt]
Then what is the ratio of their amplitudes
Test Details
The speed of a wave in a certain medium is 960 m/sec. If 3600 waves pass over a certain point of the medium in 1 minute, the wavelength is
Test Details
If amplitude of waves at distance r from a point source is A, the amplitude at a distance 2r will be
Test Details
If two waves of same frequency and same amplitude respectively on superimposition produced a resultant disturbance of the same amplitude the wave differ in phase by
Test Details
Two sound waves of slightly different frequencies propagating in the same direction produces beats due to
Test Details
Which of the property makes difference between progressive and stationary waves
Test Details
The following equation represent progressive transverse waves
z1 = A cos (w t – kx)
z
Test Details
There is a destructive interference between the two waves of wavelength λ oming from two different paths at a point. To get maximum sound or constructive interference at that point, the path of one wave is to be increased by
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