C When a wave travels from one medium to another (i.e refraction) both its velocity \& wavelength change but the frequency remains constant.
J and K CET- 2009
WAVES
172189
A stationary wave equation is given as $\mathbf{y}=\mathbf{2 0}$ $\sin (20 x) \cos (1000 t)$ What will be the speed of stationary wave?
1 $20 \mathrm{~m} / \mathrm{s}$
2 $50 \mathrm{~m} / \mathrm{s}$
3 $2 \mathrm{~cm} / \mathrm{s}$
4 not defined
Explanation:
D For stationary wave, wave speed is not defined.
JIPMER-2019
WAVES
172163
The wave front is a surface in which
1 all points are in the same phase
2 there are pairs of points in opposite phase
3 there are pairs of point with phase difference $(\pi / 2)$
4 there is no relation between the phases
Explanation:
A A wave front is the locus of points having the same phase.
AP EAMCET-20.08.2021
WAVES
172174
A standing wave can be produced by combining
1 Two longitudinal travelling waves
2 Two transverse travelling waves
3 Two sinusoidal travelling waves of identical frequency travelling in opposite directions
4 Two sinusoidal travelling waves of identical frequency travelling in same direction
Explanation:
C Standing waves on a string is an example of superposition of two sinusoidal travelling waves of identical frequency travelling in opposite directions. Sound waves in an organ pipe is an example of standing wave.
NEET Test Series from KOTA - 10 Papers In MS WORD
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WAVES
172271
When a wave undergoes refraction
1 its frequency changes
2 its amplitude changes
3 its velocity changes
4 both amplitude and frequency change
Explanation:
C When a wave travels from one medium to another (i.e refraction) both its velocity \& wavelength change but the frequency remains constant.
J and K CET- 2009
WAVES
172189
A stationary wave equation is given as $\mathbf{y}=\mathbf{2 0}$ $\sin (20 x) \cos (1000 t)$ What will be the speed of stationary wave?
1 $20 \mathrm{~m} / \mathrm{s}$
2 $50 \mathrm{~m} / \mathrm{s}$
3 $2 \mathrm{~cm} / \mathrm{s}$
4 not defined
Explanation:
D For stationary wave, wave speed is not defined.
JIPMER-2019
WAVES
172163
The wave front is a surface in which
1 all points are in the same phase
2 there are pairs of points in opposite phase
3 there are pairs of point with phase difference $(\pi / 2)$
4 there is no relation between the phases
Explanation:
A A wave front is the locus of points having the same phase.
AP EAMCET-20.08.2021
WAVES
172174
A standing wave can be produced by combining
1 Two longitudinal travelling waves
2 Two transverse travelling waves
3 Two sinusoidal travelling waves of identical frequency travelling in opposite directions
4 Two sinusoidal travelling waves of identical frequency travelling in same direction
Explanation:
C Standing waves on a string is an example of superposition of two sinusoidal travelling waves of identical frequency travelling in opposite directions. Sound waves in an organ pipe is an example of standing wave.
C When a wave travels from one medium to another (i.e refraction) both its velocity \& wavelength change but the frequency remains constant.
J and K CET- 2009
WAVES
172189
A stationary wave equation is given as $\mathbf{y}=\mathbf{2 0}$ $\sin (20 x) \cos (1000 t)$ What will be the speed of stationary wave?
1 $20 \mathrm{~m} / \mathrm{s}$
2 $50 \mathrm{~m} / \mathrm{s}$
3 $2 \mathrm{~cm} / \mathrm{s}$
4 not defined
Explanation:
D For stationary wave, wave speed is not defined.
JIPMER-2019
WAVES
172163
The wave front is a surface in which
1 all points are in the same phase
2 there are pairs of points in opposite phase
3 there are pairs of point with phase difference $(\pi / 2)$
4 there is no relation between the phases
Explanation:
A A wave front is the locus of points having the same phase.
AP EAMCET-20.08.2021
WAVES
172174
A standing wave can be produced by combining
1 Two longitudinal travelling waves
2 Two transverse travelling waves
3 Two sinusoidal travelling waves of identical frequency travelling in opposite directions
4 Two sinusoidal travelling waves of identical frequency travelling in same direction
Explanation:
C Standing waves on a string is an example of superposition of two sinusoidal travelling waves of identical frequency travelling in opposite directions. Sound waves in an organ pipe is an example of standing wave.
C When a wave travels from one medium to another (i.e refraction) both its velocity \& wavelength change but the frequency remains constant.
J and K CET- 2009
WAVES
172189
A stationary wave equation is given as $\mathbf{y}=\mathbf{2 0}$ $\sin (20 x) \cos (1000 t)$ What will be the speed of stationary wave?
1 $20 \mathrm{~m} / \mathrm{s}$
2 $50 \mathrm{~m} / \mathrm{s}$
3 $2 \mathrm{~cm} / \mathrm{s}$
4 not defined
Explanation:
D For stationary wave, wave speed is not defined.
JIPMER-2019
WAVES
172163
The wave front is a surface in which
1 all points are in the same phase
2 there are pairs of points in opposite phase
3 there are pairs of point with phase difference $(\pi / 2)$
4 there is no relation between the phases
Explanation:
A A wave front is the locus of points having the same phase.
AP EAMCET-20.08.2021
WAVES
172174
A standing wave can be produced by combining
1 Two longitudinal travelling waves
2 Two transverse travelling waves
3 Two sinusoidal travelling waves of identical frequency travelling in opposite directions
4 Two sinusoidal travelling waves of identical frequency travelling in same direction
Explanation:
C Standing waves on a string is an example of superposition of two sinusoidal travelling waves of identical frequency travelling in opposite directions. Sound waves in an organ pipe is an example of standing wave.
