Physics
Grade-9
Easy
Question
When the temperature of a solid increases, its particles _____.
- Move randomly
- Vibrate less vigorously
- Vibrate more vigorously
- Stop vibrating
Hint:
When the temperature of solid increases, velocity of the particles increases
The correct answer is: Vibrate more vigorously
- The particles of solid are strongly held together by force of attraction. They appear to vibrate at a fixed point. When the temperature of solid increases, velocity of the particles increases. The ordered arrangement of solid breaks and a physical change occurs.
- So they vibrate more rigrously
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