Reflection from an Open End
Trending Questions
Q. In stationary waves phase difference between the particles vibrating in two adjacent loops of a node is is
Q. In a stationary wave, (a) all the particles of the medium vibrate in phase (b) all the antinodes vibrate in phase (c) the alternate antinodes vibrate in phase (d) all the particles between consecutive nodes vibrate in phase
Q. Two points equidistant from a point source of light, are situated at diametrically opposite positions in an isotropic medium.The phase difference between the light waves passing through the two points is
a)zero b)90
c)180 d)finite but not these
options are in degrees
Q. 56. What are the formulas of average and maximum power of a wave ?
Q. Exercise:
[ A transverse harmonic wave on a string is described by
y(x, t)=3.0sin(36t+0.018x+π/4)
where x and y are in cm and t in s. The positive direction of x is from left to right. ]
where x and y are in cm and t in s. The positive direction of x is from left to right. ]
For the wave described in the above Exercise, plot the displacement (y) versus (t) graphs for x=0, 2 and 4 cm. What are the shapes of these of these graphs? In which aspects does the oscillatory motion in travelling wave differ from one point to another: amplitude, frequency or phase?
Q. A wave yi = 0.3 cos (0.2x − 40t) is travelling along a string toward a boundary at x = 0. What is the expression for the reflected wave when, the string has a free end at x = 0. Assume SI units
- 0.3 cos(0.2x − 40t)
- 0.3 cos (0.2x + 40t)
- 0.3 cos (0.2x − 40t + π)
- None of these
Q.
A string of linear mass density 0.5 g cm−1 and a total length 30 cm is tied to a fixed wall at one end and to a frictionless ring at the other end. The ring can move on a vertical rod. A wave pulse is produced on the string which moves towards the ring at a speed of 20 cms−1. The pulse is symmetric about its maximum which is located at a distance of 20 cm from the end joined to the ring. Assuming that the wave is reflected from the ends without loss of energy, find the time taken by the string to regain its shape.
- 2 sec
- 1sec
- 4 sec
- None of these
Q. Velocity of sound in air is 332ms−1. Its velocity in vacuum will be
> 332ms−1
- =332ms−1
- < 332ms−1
- None of these
Q. Explain how sound wave propagated in the form of congitutednal wave
