Physics
Grade-9
Easy
Question
The time period of the revolution of the Earth is:
- 24 Hours
- 365 1/4 days
- 60 Minutes
- 30 to 31 days
Hint:
time period of revolution of earth is 365 1/4 days
The correct answer is: 365 1/4 days
time period of revolution of earth is 365 1/4 days
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Radian is a unit of:
Radian is a unit of:
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A system of block and mass exhibiting oscillation must possess:
A system of block and mass exhibiting oscillation must possess:
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The number of vibrations or oscillations per second is called:
The number of vibrations or oscillations per second is called:
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The motion which is not oscillatory is:
The motion which is not oscillatory is:
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A periodic to-and-fro motion is called:
A periodic to-and-fro motion is called:
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A particle is moving in a circle with a uniform speed. Its motion is:
A particle is moving in a circle with a uniform speed. Its motion is:
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The oscillations of a simple pendulum of a wall clock are:
The oscillations of a simple pendulum of a wall clock are:
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Which letter
among the following represents the extreme positions of the pendulum.
Which letter
among the following represents the extreme positions of the pendulum.
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Which of the following is incorrectly matched?
Which of the following is incorrectly matched?
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A body is in uniform motion. On which type of path should it travel so that its motion can be called periodic motion?
A body is in uniform motion. On which type of path should it travel so that its motion can be called periodic motion?
PhysicsGrade-9
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Match the following.
| a. Vibratory motion |
1. It is a kind of repetitive motion that repeats itself after a fixed interval (or regular intervals) of time. |
| b. Periodic motion |
2. It is a kind of motion in which a body covers equal distances in equal intervals of time along the same straight line. |
| c. Uniform motion |
3. It is a kind of oscillatory motion in which the moving object undergoes a change in shape or size. |
Match the following.
| a. Vibratory motion |
1. It is a kind of repetitive motion that repeats itself after a fixed interval (or regular intervals) of time. |
| b. Periodic motion |
2. It is a kind of motion in which a body covers equal distances in equal intervals of time along the same straight line. |
| c. Uniform motion |
3. It is a kind of oscillatory motion in which the moving object undergoes a change in shape or size. |
PhysicsGrade-9
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The _______ of a ________ motion is the small interval of time after which the motion is repeated.
The _______ of a ________ motion is the small interval of time after which the motion is repeated.
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Human heart breathing is an example of:
Human heart breathing is an example of:
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How can you describe a periodic motion?
How can you describe a periodic motion?
PhysicsGrade-9
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The human heartbeat is an example of which type of motion?
The human heartbeat is an example of which type of motion?
PhysicsGrade-9
