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Matter In Our Surroundings
Give some points of differences between distance and displacement.
Differences between distance and displacement are:
|
Distance |
Displacement |
|
1. Distance is the length of the actual path traversed by a body, irrespective of its direction of motion. |
1. Displacement is the shortest distance between the initial and final positions of a body in a given direction. |
|
2. Distance between two given points may be same or different for different paths chosen. |
2. Displacement between two given points is always same. |
|
3. It is a scalar quantity. |
3. It is a vector quantity. |
|
4. Distance covered is always positive. |
4. Displacement covered may be positive, negative or zero. |
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Convert the following temperatures to Kelvin scale
25°C
What is the physical state of water at
100 °C
For any substance, why does the temperature remain constant during the change of state ?
Suggest a method to liquify atmospheric gases.
Convert the following temperatures to Kelvin scale.
35°C
Give reason for the following observations.
Naphthalene balls disappear with time without leaving any solid.
Give reason for the following observations.
We can get the smell of perfume sitting several metres away.
What is the physical state of water at
a) 25°C
b)00C
c)1000C
What is the physical state of water at
0°C
What is the physical state of water at
100°C
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