Physics
Grade-9
Easy
Question
In a longitudinal wave _______ and _______ are generated.
- Crest, hills
- Troughs, valleys
- Compression, rarefaction
- Crest, trough
The correct answer is: Compression, rarefaction
In a longitudinal wave when it propagates through a medium region of compressions and rarefactions are generated.
Hence, (C) Compression, rarefaction is the right answer.
Related Questions to study
Physics
In a transverse wave ______ and _______ are generated.
In a transverse wave ______ and _______ are generated.
PhysicsGrade-9
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
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
Physics
The phase (at a time t) of a particle in simple harmonic motion tells:
The phase (at a time t) of a particle in simple harmonic motion tells:
PhysicsGrade-9
Physics
The period of vibration for a spring block system of spring constant k is:
The period of vibration for a spring block system of spring constant k is:
PhysicsGrade-9
Physics
For the horizontal simple harmonic motion of a spring-block system, the elastic force is:
For the horizontal simple harmonic motion of a spring-block system, the elastic force is:
PhysicsGrade-9
Physics
Which one of the following forces doesn't act on the spring and block system?
Which one of the following forces doesn't act on the spring and block system?
PhysicsGrade-9
Physics
The time period of oscillations of spring and block system doesn’t depend upon:
The time period of oscillations of spring and block system doesn’t depend upon:
PhysicsGrade-9
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 |
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
Physics
Light waves are _____ but not _____ in nature.
Light waves are _____ but not _____ in nature.
PhysicsGrade-9
Physics
In vacuum but not in a medium
In vacuum but not in a medium
PhysicsGrade-9
Physics
In which of the following media can non-mechanical waves travel?
In which of the following media can non-mechanical waves travel?
PhysicsGrade-9
Physics
Mechanical transverse waves cannot travel through:
Mechanical transverse waves cannot travel through:
PhysicsGrade-9
Physics
While we throw a ball in the direction of waves, the waves transfer _____ to the ball:
While we throw a ball in the direction of waves, the waves transfer _____ to the ball:
PhysicsGrade-9
Physics
Why are sound waves considered mechanical waves?
Why are sound waves considered mechanical waves?
PhysicsGrade-9
Physics
“Wave motion shifts mass from one region to another” The above statement is:
“Wave motion shifts mass from one region to another” The above statement is:
PhysicsGrade-9
