Physics
Grade-9
Easy
Question
Hertz is a unit of:
- Time period
- Displacement
- Amplitude
- Frequency
Hint:
One hertz is the same as one cycle per second.
The correct answer is: Frequency
The SI unit for frequency is the hertz (Hz). One hertz is the same as one cycle per second.
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The smallest interval of time after which a motion is repeated is called its ___________.
The smallest interval of time after which a motion is repeated is called its ___________.
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The time period of a minute hand of a clock is:
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The time period of the revolution of the Earth is:
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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. |
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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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