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CBSE - XI Science - Physics - Waves
qus-(a) A incident wave is represented by: y=20 sin(2x-4t)
write the expression for reflected wave;-
1. from a rigid boundary
2.from an open boundary
(b) A particle is moving with S.H.M in a atraight line.
when the distance of the particle from the equilibrium position has values y1 & y2, the corresponding values of velocities are u1, u2. show that the time period of oscillation is given by;-
t= 2 pi root over{[(y2)power2-(y1)power2]%[(u2)power2-(u1)power2]}
write the expression for reflected wave;-
1. from a rigid boundary
2.from an open boundary
(b) A particle is moving with S.H.M in a atraight line.
when the distance of the particle from the equilibrium position has values y1 & y2, the corresponding values of velocities are u1, u2. show that the time period of oscillation is given by;-
t= 2 pi root over{[(y2)power2-(y1)power2]%[(u2)power2-(u1)power2]}
Asked by Ravikant
26th February 2016,
10:05 PM
CBSE - XI Science - Physics - Waves
what is correct wave equation
y=A sin(wt-kx) or y=Asin(kx-wt) ???
which & how above equation of waves will used especially in +ve x-direction
& -ve x-direction ???
y=A sin(wt-kx) or y=Asin(kx-wt) ???
which & how above equation of waves will used especially in +ve x-direction
& -ve x-direction ???
Asked by Ravikant
16th February 2016,
6:59 PM
CBSE - XI Science - Physics - Waves
what is the amplitude of a longitudinal wave....and how do we represent longitudinal wave graphically ...?
and i also want to know that how electromagnetic waves propogates in vaccum..how do they travel when there is no medium for oscillation...????
pls answer all my questions
Asked by Rzainabafra -
31st January 2016,
1:38 PM
CBSE - XI Science - Physics - Waves
A sound wave travelling along a string is described by y(x, t) = 5 x 10-3 sin (80x - 3t) in which numerical constants are in S.I unit. Calculate (i) the amplitude (ii) the wave length (iii) the period and frequency of the wave.
Asked by Topperlearning User
22nd May 2015,
2:59 PM
CBSE - XI Science - Physics - Waves
For the travelling harmonic wave
where x and y are in cm and t in s. Calculate the phase difference between oscillatory motion of two points separated by a distance of
(a) 4m
(b) 0.5m,
(c) 
Asked by Topperlearning User
22nd May 2015,
2:54 PM
CBSE - XI Science - Physics - Waves
A narrow sound pulse (for example, a short pip by a whistle) is sent across a medium. (i) Does the pulse have a definite (a) wavelength, (b) frequency, (c) speed of propagation? (ii) If the pulse rate is 1 after every 20s (i.e the whistle is blown for a split second after every 20s), is the frequency of the note produced by the whistle equal to 1/20 = 0.05 Hz?
Asked by Topperlearning User
22nd May 2015,
2:53 PM
CBSE - XI Science - Physics - Waves
What is propagation constant (k)?
Asked by Topperlearning User
22nd May 2015,
2:37 PM
CBSE - XI Science - Physics - Waves
Plane microwaves from a transmitter are directed normally towards a plane reflector.A detector moves along the normal to the reflector.Between positions of 14 successive maxima , the detector travels a distance 0.14m. Find the frequency of the transmitter.
Asked by Malavika Umesh
21st May 2015,
9:52 AM
CBSE - XI Science - Physics - Waves
If light is an electromagnetic wave then why does it remain unchanged in an electric/magnetic field?
Asked by joykphukan
10th May 2015,
9:28 PM
CBSE - XI Science - Physics - Waves
two strings A and string B playing the note 'Ga' are slightly out of tune and produce beats of frequency 6Hz. The tension in the string A is slightly reduced and the beat frequency is found to reduce to 3Hz. if the original frequency of A is 324 Hz what is the frequency of B?
Asked by sammy123
21st March 2015,
4:26 PM
CBSE - XI Science - Physics - Waves
Why water waves is said to be a combination of both transverse and longitudinal waves
Asked by rpmtu
23rd December 2014,
7:37 PM
CBSE - XI Science - Physics - Waves
Derive an expression for a simple harmonic plane progressive wave.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XI Science - Physics - Waves
Given below are some examples of wave-motion. State in each case if the wave-motion is transverse, longitudinal or a combination of both : (i) Motion of a kink in a long coil spring produced by displacing the end of the spring sideways. (ii) Waves produced in a cylinder containing a liquid by moving its piston back and forth. (iii) Waves produced by a motor boat sailing in water. (iv) Light waves travelling from the sun to the earth. (v) Ultrasonic waves in air produced by a vibrating quartz crystal.
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XI Science - Physics - Waves
Define transverse wave motion. What are the essential conditions required for the formation of transverse wave motion?
Asked by Topperlearning User
4th June 2014,
1:23 PM
CBSE - XI Science - Physics - Waves
Define longitudinal wave motion. What are the essential conditions required for the formation of longitudinal wave motion?
Asked by Topperlearning User
4th June 2014,
1:23 PM
