06. REFLECTION OF WAVES
WAVES (NCERT)

274477 When a wave is reflected from a denser medium, the change in phase is

1 0
2 $\pi $
3 $2\pi $
4 $3\pi $
WAVES (NCERT)

274478 A progressive wave $\text{y}=\text{Asin}\left( \text{kx}-\omega \text{t} \right)$ is reflected by a rigid wall at $x=0$. Then the reflected wave can be represented by

1 $y=A\text{sin}\left( kx+\omega t \right)$
2 $y=-A\text{sin}\left( kx-\omega t \right)$
3 $\text{y}=\text{Acos}\left( \text{kx}+\omega \text{t} \right)$
4 $y=-A\text{sin}\left( kx+\omega t \right)$
WAVES (NCERT)

274479 A string is clamped at both the ends and it is vibrating in its ${{4}^{\text{th }\!\!~\!\!\text{ }}}$ harmonic. The equation of the stationary wave is $Y=0.3\text{sin}\left( 0.157\text{x} \right)\text{cos}\left( 200\omega \text{t} \right)$. The length of the string is: (All quantities are in SI units.)

1 $20\text{m}$
2 $80\text{m}$
3 $40\text{m}$
4 $60\text{m}$
WAVES (NCERT)

274480 Which of the following changes at an antinode in a stationary wave?

1 Density only
2 Pressure only
3 Both pressure and density
4 Neither pressure nor density
WAVES (NCERT)

274481 Consider the three waves ${{z}_{1}},{{z}_{2}}$ and ${{z}_{3}}$ as #[examname: NCERT Page-379 / N-289
${{\text{z}}_{1}}=\text{Asin}\left( kx-\omega \text{t} \right)$
${{z}_{2}}=A\text{sin}\left( kx+\omega t \right)$
${{\text{z}}_{3}}=\text{Asin}\left( ky-\omega \text{t} \right)$
Which of the following represents a standing wave?]#

1 ${{z}_{1}}+{{z}_{2}}$
2 ${{z}_{3}}+{{z}_{1}}$
3 ${{z}_{2}}+{{z}_{3}}$
4 ${{z}_{1}}+{{z}_{2}}+{{z}_{3}}$
WAVES (NCERT)

274477 When a wave is reflected from a denser medium, the change in phase is

1 0
2 $\pi $
3 $2\pi $
4 $3\pi $
WAVES (NCERT)

274478 A progressive wave $\text{y}=\text{Asin}\left( \text{kx}-\omega \text{t} \right)$ is reflected by a rigid wall at $x=0$. Then the reflected wave can be represented by

1 $y=A\text{sin}\left( kx+\omega t \right)$
2 $y=-A\text{sin}\left( kx-\omega t \right)$
3 $\text{y}=\text{Acos}\left( \text{kx}+\omega \text{t} \right)$
4 $y=-A\text{sin}\left( kx+\omega t \right)$
WAVES (NCERT)

274479 A string is clamped at both the ends and it is vibrating in its ${{4}^{\text{th }\!\!~\!\!\text{ }}}$ harmonic. The equation of the stationary wave is $Y=0.3\text{sin}\left( 0.157\text{x} \right)\text{cos}\left( 200\omega \text{t} \right)$. The length of the string is: (All quantities are in SI units.)

1 $20\text{m}$
2 $80\text{m}$
3 $40\text{m}$
4 $60\text{m}$
WAVES (NCERT)

274480 Which of the following changes at an antinode in a stationary wave?

1 Density only
2 Pressure only
3 Both pressure and density
4 Neither pressure nor density
WAVES (NCERT)

274481 Consider the three waves ${{z}_{1}},{{z}_{2}}$ and ${{z}_{3}}$ as #[examname: NCERT Page-379 / N-289
${{\text{z}}_{1}}=\text{Asin}\left( kx-\omega \text{t} \right)$
${{z}_{2}}=A\text{sin}\left( kx+\omega t \right)$
${{\text{z}}_{3}}=\text{Asin}\left( ky-\omega \text{t} \right)$
Which of the following represents a standing wave?]#

1 ${{z}_{1}}+{{z}_{2}}$
2 ${{z}_{3}}+{{z}_{1}}$
3 ${{z}_{2}}+{{z}_{3}}$
4 ${{z}_{1}}+{{z}_{2}}+{{z}_{3}}$
WAVES (NCERT)

274477 When a wave is reflected from a denser medium, the change in phase is

1 0
2 $\pi $
3 $2\pi $
4 $3\pi $
WAVES (NCERT)

274478 A progressive wave $\text{y}=\text{Asin}\left( \text{kx}-\omega \text{t} \right)$ is reflected by a rigid wall at $x=0$. Then the reflected wave can be represented by

1 $y=A\text{sin}\left( kx+\omega t \right)$
2 $y=-A\text{sin}\left( kx-\omega t \right)$
3 $\text{y}=\text{Acos}\left( \text{kx}+\omega \text{t} \right)$
4 $y=-A\text{sin}\left( kx+\omega t \right)$
WAVES (NCERT)

274479 A string is clamped at both the ends and it is vibrating in its ${{4}^{\text{th }\!\!~\!\!\text{ }}}$ harmonic. The equation of the stationary wave is $Y=0.3\text{sin}\left( 0.157\text{x} \right)\text{cos}\left( 200\omega \text{t} \right)$. The length of the string is: (All quantities are in SI units.)

1 $20\text{m}$
2 $80\text{m}$
3 $40\text{m}$
4 $60\text{m}$
WAVES (NCERT)

274480 Which of the following changes at an antinode in a stationary wave?

1 Density only
2 Pressure only
3 Both pressure and density
4 Neither pressure nor density
WAVES (NCERT)

274481 Consider the three waves ${{z}_{1}},{{z}_{2}}$ and ${{z}_{3}}$ as #[examname: NCERT Page-379 / N-289
${{\text{z}}_{1}}=\text{Asin}\left( kx-\omega \text{t} \right)$
${{z}_{2}}=A\text{sin}\left( kx+\omega t \right)$
${{\text{z}}_{3}}=\text{Asin}\left( ky-\omega \text{t} \right)$
Which of the following represents a standing wave?]#

1 ${{z}_{1}}+{{z}_{2}}$
2 ${{z}_{3}}+{{z}_{1}}$
3 ${{z}_{2}}+{{z}_{3}}$
4 ${{z}_{1}}+{{z}_{2}}+{{z}_{3}}$
WAVES (NCERT)

274477 When a wave is reflected from a denser medium, the change in phase is

1 0
2 $\pi $
3 $2\pi $
4 $3\pi $
WAVES (NCERT)

274478 A progressive wave $\text{y}=\text{Asin}\left( \text{kx}-\omega \text{t} \right)$ is reflected by a rigid wall at $x=0$. Then the reflected wave can be represented by

1 $y=A\text{sin}\left( kx+\omega t \right)$
2 $y=-A\text{sin}\left( kx-\omega t \right)$
3 $\text{y}=\text{Acos}\left( \text{kx}+\omega \text{t} \right)$
4 $y=-A\text{sin}\left( kx+\omega t \right)$
WAVES (NCERT)

274479 A string is clamped at both the ends and it is vibrating in its ${{4}^{\text{th }\!\!~\!\!\text{ }}}$ harmonic. The equation of the stationary wave is $Y=0.3\text{sin}\left( 0.157\text{x} \right)\text{cos}\left( 200\omega \text{t} \right)$. The length of the string is: (All quantities are in SI units.)

1 $20\text{m}$
2 $80\text{m}$
3 $40\text{m}$
4 $60\text{m}$
WAVES (NCERT)

274480 Which of the following changes at an antinode in a stationary wave?

1 Density only
2 Pressure only
3 Both pressure and density
4 Neither pressure nor density
WAVES (NCERT)

274481 Consider the three waves ${{z}_{1}},{{z}_{2}}$ and ${{z}_{3}}$ as #[examname: NCERT Page-379 / N-289
${{\text{z}}_{1}}=\text{Asin}\left( kx-\omega \text{t} \right)$
${{z}_{2}}=A\text{sin}\left( kx+\omega t \right)$
${{\text{z}}_{3}}=\text{Asin}\left( ky-\omega \text{t} \right)$
Which of the following represents a standing wave?]#

1 ${{z}_{1}}+{{z}_{2}}$
2 ${{z}_{3}}+{{z}_{1}}$
3 ${{z}_{2}}+{{z}_{3}}$
4 ${{z}_{1}}+{{z}_{2}}+{{z}_{3}}$
WAVES (NCERT)

274477 When a wave is reflected from a denser medium, the change in phase is

1 0
2 $\pi $
3 $2\pi $
4 $3\pi $
WAVES (NCERT)

274478 A progressive wave $\text{y}=\text{Asin}\left( \text{kx}-\omega \text{t} \right)$ is reflected by a rigid wall at $x=0$. Then the reflected wave can be represented by

1 $y=A\text{sin}\left( kx+\omega t \right)$
2 $y=-A\text{sin}\left( kx-\omega t \right)$
3 $\text{y}=\text{Acos}\left( \text{kx}+\omega \text{t} \right)$
4 $y=-A\text{sin}\left( kx+\omega t \right)$
WAVES (NCERT)

274479 A string is clamped at both the ends and it is vibrating in its ${{4}^{\text{th }\!\!~\!\!\text{ }}}$ harmonic. The equation of the stationary wave is $Y=0.3\text{sin}\left( 0.157\text{x} \right)\text{cos}\left( 200\omega \text{t} \right)$. The length of the string is: (All quantities are in SI units.)

1 $20\text{m}$
2 $80\text{m}$
3 $40\text{m}$
4 $60\text{m}$
WAVES (NCERT)

274480 Which of the following changes at an antinode in a stationary wave?

1 Density only
2 Pressure only
3 Both pressure and density
4 Neither pressure nor density
WAVES (NCERT)

274481 Consider the three waves ${{z}_{1}},{{z}_{2}}$ and ${{z}_{3}}$ as #[examname: NCERT Page-379 / N-289
${{\text{z}}_{1}}=\text{Asin}\left( kx-\omega \text{t} \right)$
${{z}_{2}}=A\text{sin}\left( kx+\omega t \right)$
${{\text{z}}_{3}}=\text{Asin}\left( ky-\omega \text{t} \right)$
Which of the following represents a standing wave?]#

1 ${{z}_{1}}+{{z}_{2}}$
2 ${{z}_{3}}+{{z}_{1}}$
3 ${{z}_{2}}+{{z}_{3}}$
4 ${{z}_{1}}+{{z}_{2}}+{{z}_{3}}$