Physics 11th Chap 9 : Topic 10 - Maryam Publications

Physics Chapter 9 : Topic 10

Formation of Stationary Waves

1 / 30

A stationary wave is formed due to the superposition of two waves having:

A) Same frequency and amplitude traveling in opposite directions

B) Different frequencies and same amplitude

C) Same frequency but different speeds

D) Different wavelengths traveling in the same direction

2 / 30

In a stationary wave, the points where the displacement is always zero are called:

A) Crests

B) Antinodes

C) Equilibrium positions

D) Nodes

3 / 30

The points of maximum displacement in a stationary wave are called:

A) Antinodes

B) Wavelength points

C) Reflection points

D) Nodes

4 / 30

The graphical representation of a stationary wave shows:

A) Fixed points with zero and maximum displacement

B) Random vibrations of particles

C) Only one travelling wave

D) A wave moving continuously in one direction

5 / 30

Two waves forming a stationary wave must have:

A) Equal amplitude and equal frequency

B) Different amplitude and frequency

C) Equal wavelength but different frequency

D) Different direction and different speed

6 / 30

In a stationary wave, the distance between two consecutive nodes is:

A) $\mathbf{2\lambda}$

B) $\mathbf{\lambda\ /\ 2}$

C) $\mathbf{\lambda\ /\ 4}$

D) $\mathbf{\lambda}$

7 / 30

The distance between a node and the nearest antinode in a stationary wave is:

A) $\mathbf{\lambda\ /\ 2}$

B) $\mathbf{2\lambda}$

C) $\mathbf{\lambda}$

D) $\mathbf{\lambda\ /\ 4}$

8 / 30

When two identical waves travel in opposite directions, the resulting wave pattern appears:

A) To increase in wavelength

B) To remain fixed in position

C) To disappear completely

D) To move with constant speed

9 / 30

In the graphical formation of a stationary wave, the first step involves:

A) Increasing frequency continuously

B) Adding two waves moving in opposite directions

C) Stopping one wave

D) Removing the reflected wave

10 / 30

At an antinode of a stationary wave, the amplitude of vibration is:

A) Zero

B) Maximum

C) Minimum

D) Constant and zero

11 / 30

At a node in a stationary wave, particles:

A) Remain permanently at rest

B) Have maximum energy

C) Vibrate with maximum amplitude

D) Move with maximum velocity

12 / 30

A stationary wave differs from a travelling wave because it:

A) Has no wavelength

B) Cannot be represented graphically

C) Has no amplitude

D) Does not transfer energy along the medium

13 / 30

The amplitude of particles in a stationary wave:

A) increases continuously with time

B) is always zero

C) varies from zero at nodes to maximum at antinodes

D) is the same at all points

14 / 30

The formation of a stationary wave on a string fixed at both ends occurs due to:

A) Absorption of waves

B) Polarization of waves

C) Reflection of waves at the fixed ends

D) Refraction of waves

15 / 30

The equation of two opposite travelling waves can produce a stationary wave because:

A) They stop moving completely.

B) Their frequencies become zero.

C) They have no displacement.

D) Their interference creates fixed nodes and antinodes.

16 / 30

In a stationary wave, all particles between two adjacent nodes vibrate:

A) With different frequencies

B) With random motion

C) In the same phase

D) With no phase relationship

17 / 30

The graphical representation of a stationary wave is obtained by:

A) Adding displacements of two opposite travelling waves at different times

B) Drawing only one wave

C) Plotting frequency against time

D) Measuring only wavelength

18 / 30

Particles on opposite sides of a node in a stationary wave vibrate:

A) Out of phase by $\mathbf{\pi}$

B) With different wavelengths

C) In the same phase

D) With zero frequency

19 / 30

If the amplitude of each wave forming a stationary wave is $\mathbf{A}$, the amplitude at an antinode is:

A) $\mathbf{A\ /\ 2}$

B) $\mathbf{0}$

C) $\mathbf{2A}$

D) $\mathbf{A}$

20 / 30

If the amplitude of each wave forming a stationary wave is $\mathbf{A}$, the amplitude at a node is:

A) $\mathbf{A\ /\ 2}$

B) $\mathbf{0}$

C) $\mathbf{2A}$

D) $\mathbf{A}$

21 / 30

Which statement about stationary waves is correct?

A) Nodes and antinodes move along the medium.

B) Energy travels continuously through the string.

C) All particles have equal amplitude.

D) The wave pattern remains fixed.

22 / 30

A stationary wave has three loops between fixed ends. The number of antinodes present is:

A) One

B) Two

C) Six

D) Three

23 / 30

The number of nodes in a stationary wave with four antinodes between fixed ends is:

A) $\mathbf{3}$

B) $\mathbf{5}$

C) $\mathbf{4}$

D) $\mathbf{8}$

24 / 30

When a stationary wave is formed, the particles of the medium:

A) Transfer energy continuously

B) Vibrate with different amplitudes depending on position

C) Move from one end to another

D) Stop vibrating completely

25 / 30

A stationary wave can be produced by:

A) Two waves moving in the same direction

B) A single wave without reflection

C) Two identical waves moving opposite to each other

D) Two waves of different frequencies

26 / 30

In a graphical stationary wave pattern, the loops between two consecutive nodes represent:

A) Independent wavelengths

B) Points of reflection only

C) Regions of equal maximum displacement

D) Regions where particles do not vibrate

27 / 30

The velocity of a particle at an antinode is:

A) Always constant

B) Zero because amplitude is maximum

C) Maximum during vibration

D) Always zero

28 / 30

Which quantity remains constant for all particles in a stationary wave?

A) Frequency

B) Phase difference between adjacent particles

C) Amplitude

D) Displacement

29 / 30

In the graphical representation of stationary waves, the points where successive curves intersect indicate:

A) Frequency

B) Wavelength

C) Antinodes

D) Nodes

30 / 30

The formation of a stationary wave demonstrates the application of:

A) Principle of superposition

B) Newton’s laws only

C) Photoelectric effect

D) Conservation of charge

Your score is

0%