Wave Motion Test-14 (waves) Waves Physics NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

A wave pulse travels along a taut string towards a fixed end as shown in the adjacent figures:

The reflected pulse is correctly shown by:

1.		2.
3.		4.

Subtopic: Wave Motion |

From NCERT

1

2

3

4

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Q2:

Sinusoidal sound waves of the same frequency travelling in air along the

x

$x$ -axis and the

y

$y$ -axis arrive in phase with each other at the origin. Their amplitudes are equal to

A

$A$ (each). The amplitude of the vibration at the origin is:

1.

A

$A$
2.

\sqrt{2} A

$\sqrt 2A$
3.

2 A

$2A$
4.

(2 + \sqrt{2}) A

$(2+\sqrt2)A$

Subtopic: Wave Motion |

From NCERT

1

2

3

4

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Q3:

A waveform given by:

y = 3 A \sin (ω t - k x)

$y=3A\sin(\omega t-kx)$
is superposed with another waveform

y = 4 A \cos (ω t - k x) .

$y=4A\cos(\omega t-kx).$ The amplitude of the resulting waveform will be:

1.	$7A$	2.	$A$
3.	$3.5A$	4.	$5A$

Subtopic: Wave Motion |

86%

From NCERT

1

2

3

4

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Q4:

A tuning fork, placed in a room, vibrates according to the equation:

Y = (10^{- 4} m) \sin (\frac{2 π t}{0.01 s})

$Y=(10^{-4}~\text m)\sin\Big({\large\frac{2\pi t}{0.01~\text s}}\Big)$ where

Y

$Y$ is the displacement of the tip of a prong. The speed of sound in air is

330 m/s.

$330~\text{m/s.}$ The amplitude of vibration of the prong is:
1.

10^{- 4} m

$10^{-4}~\text{m}$
2.

2 \times 10^{- 4} m

$2\times10^{-4}~\text{m}$
3.

10^{- 6} m

$10^{-6}~\text{m}$
4.

2 \times 10^{- 6} m

$2\times10^{-6}~\text{m}$

Subtopic: Wave Motion |

85%

From NCERT

1

2

3

4

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Q5:

A tuning fork, placed in a room, vibrates according to the equation:

Y = (10^{- 4} m) \sin (\frac{2 π t}{0.01 s})

$Y=(10^{-4}~\text m)\sin\left({\Large\frac{2\pi t}{0.01~\text s}}\right)$ where

Y

$Y$ is the displacement of the tip of a prong. The speed of sound in air is

330 m/s.

$330~\text{m/s.}$ The frequency of the tuning fork is:
1.

100 Hz

$100~\text{Hz}$
2.

50 Hz

$50~\text{Hz}$
3.

200 Hz

$200~\text{Hz}$
4.

200 π Hz

$200\pi~\text{Hz}$

Subtopic: Wave Motion |

86%

From NCERT

1

2

3

4

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