Physics
Grade-9
Easy
Question
Which of the following types of waves superimpose?
- Light waves
- Sound waves
- Water waves
- All of these
Hint:
For all linear systems, the principle of superposition states that the net response caused by two or more stimuli is the sum of the responses that would have been caused by each stimulus individually.
The correct answer is: All of these
Light waves from two coherent sources superimpose at a point.
A stereo has at least two speakers that create sound waves, and waves can reflect from walls. All these waves superimpose.
If two objects bob up and down with the same frequency at two different points, then two sets of concentric circular waves will be produced on the surface of the water. These concentric waves will interfere with each other as they travel across the surface of the water.
Hence, all three waves are able to superimpose. Therefore (D) all of the above is the right answer.
Related Questions to study
Physics
The combination of two or more overlapping waves is called _________.
- Reflection
- Construction
- Superposition
- Resonance
The combination of two or more overlapping waves is called _________.
PhysicsGrade-9
- Reflection
- Construction
- Superposition
- Resonance
Physics
________ can’t occupy the same space at the same instant of time.
- Two objects
- Two waves
- Two pulses
- Two vibrations
________ can’t occupy the same space at the same instant of time.
PhysicsGrade-9
- Two objects
- Two waves
- Two pulses
- Two vibrations
Physics
In a longitudinal wave _______ and _______ are generated.
- Crest, hills
- Troughs, valleys
- Compression, rarefaction
- Crest, trough
In a longitudinal wave _______ and _______ are generated.
PhysicsGrade-9
- Crest, hills
- Troughs, valleys
- Compression, rarefaction
- Crest, trough
Physics
In a transverse wave ______ and _______ are generated.
- Crest, hills
- Troughs, valleys
- Compression, rarefaction
- Crest, trough
In a transverse wave ______ and _______ are generated.
PhysicsGrade-9
- Crest, hills
- Troughs, valleys
- Compression, rarefaction
- Crest, trough
Physics
Select the incorrect statement(s) from the following.
I. A simple harmonic motion is necessarily periodic.
II. A simple harmonic motion may be oscillatory
III. An oscillatory motion is necessarily periodic
- I only
- I and II
- II and III
- I and III
Select the incorrect statement(s) from the following.
I. A simple harmonic motion is necessarily periodic.
II. A simple harmonic motion may be oscillatory
III. An oscillatory motion is necessarily periodic
PhysicsGrade-9
- I only
- I and II
- II and III
- I and III
Physics
The phase (at a time t) of a particle in simple harmonic motion tells:
- Neither the position of the particle nor its direction of motion at time t
- Both the position and direction of motion of the particle at time t
- Only the direction of motion of the particle at time t
- Only the position of the particle at time t
The phase (at a time t) of a particle in simple harmonic motion tells:
PhysicsGrade-9
- Neither the position of the particle nor its direction of motion at time t
- Both the position and direction of motion of the particle at time t
- Only the direction of motion of the particle at time t
- Only the position of the particle at time t
Physics
The period of vibration for a spring block system of spring constant k is:
- T = 2π√(k/m)
- T = 2π√(m/k)
- T = π√(k/m)
- T = π√(m/k)
The period of vibration for a spring block system of spring constant k is:
PhysicsGrade-9
- T = 2π√(k/m)
- T = 2π√(m/k)
- T = π√(k/m)
- T = π√(m/k)
Physics
For the horizontal simple harmonic motion of a spring-block system, the elastic force is:
- Maximum at the extreme position
- Maximum at mean position
- Constant throughout the motion
- Cannot be predicted
For the horizontal simple harmonic motion of a spring-block system, the elastic force is:
PhysicsGrade-9
- Maximum at the extreme position
- Maximum at mean position
- Constant throughout the motion
- Cannot be predicted
Physics
Which one of the following forces doesn't act on the spring and block system?
- Elastic force
- Frictional force
- Gravitational force
- Tension force
Which one of the following forces doesn't act on the spring and block system?
PhysicsGrade-9
- Elastic force
- Frictional force
- Gravitational force
- Tension force
Physics
The time period of oscillations of spring and block system doesn’t depend upon:
- Spring constant
- Displacement
- Mass of the block
- All of these
The time period of oscillations of spring and block system doesn’t depend upon:
PhysicsGrade-9
- Spring constant
- Displacement
- Mass of the block
- All of these
Physics
Match the following with the correct response.
1. A moving disturbance | A. Mechanical waves |
2. Propagation require material medium | B. Oscillatory motion |
3. Particles vibrate perpendicular to the | C. Transverse waves direction of wave propagation |
4. Back and forth motion | D. Wave |
- 1-B, 2-D, 3-A, 4-C
- 1-A, 2-C, 3-B, 4-D
- 1-D, 2-A, 3-C, 4-B
- 1-C, 2-B, 3-D, 4-A
Match the following with the correct response.
1. A moving disturbance | A. Mechanical waves |
2. Propagation require material medium | B. Oscillatory motion |
3. Particles vibrate perpendicular to the | C. Transverse waves direction of wave propagation |
4. Back and forth motion | D. Wave |
PhysicsGrade-9
- 1-B, 2-D, 3-A, 4-C
- 1-A, 2-C, 3-B, 4-D
- 1-D, 2-A, 3-C, 4-B
- 1-C, 2-B, 3-D, 4-A
Physics
Light waves are _____ but not _____ in nature.
- Mechanical, transverse
- Transverse, mechanical
- Longitudinal, mechanical
- Mechanical, longitudinal
Light waves are _____ but not _____ in nature.
PhysicsGrade-9
- Mechanical, transverse
- Transverse, mechanical
- Longitudinal, mechanical
- Mechanical, longitudinal
Physics
In vacuum but not in a medium
- The medium particles travel from one place to another
- There is no humudity in the air
- The disturbance travel from one place to another
- Both particles, as well as disturbances, travel from one place to another
In vacuum but not in a medium
PhysicsGrade-9
- The medium particles travel from one place to another
- There is no humudity in the air
- The disturbance travel from one place to another
- Both particles, as well as disturbances, travel from one place to another
Physics
In which of the following media can non-mechanical waves travel?
- In a medium but not in a vacuum
- Neither in a medium nor a vacuum
- In a vacuum as well as in a medium
- In vacuum but not in a medium
In which of the following media can non-mechanical waves travel?
PhysicsGrade-9
- In a medium but not in a vacuum
- Neither in a medium nor a vacuum
- In a vacuum as well as in a medium
- In vacuum but not in a medium
Physics
Mechanical transverse waves cannot travel through:
- Solids
- Liquids
- Gas
- It can travel through all the above
Mechanical transverse waves cannot travel through:
PhysicsGrade-9
- Solids
- Liquids
- Gas
- It can travel through all the above