Solve
Guides
0
Question
Heat is absorbed by a body, but its temperature does not increase. Which of the following statement explains the phenomena?
- Only K.E. of vibration increases
- Only P.E. of inter molecular force changes
- No increase in internal energy takes place
- Increase in K.E. is balanced by decrease in P.E.
Open in App
Solution
Verified by Toppr
The heat energy necessary to bring about the change of state that does not appear externally is called the latent heat.
During the change of state, the energy supplied (latent heat) breaks up the inter-molecular interactions and only the potential energy stored of these inter-molecular force changes. So, the temperature remains constant until all the interactions are completely disrupted.
For example during the change of state from ice to water heat is absorbed but the temperature does not rise.
Was this answer helpful?
0
Similar Questions
View Solution
View Solution
Q3
Look at the graph. It shows a typical variation of populations of predators (wolves, tigers etc.) and prey (deer, rabbits etc.) in a habitat such as a forest.
Answer these questions.
1. Why is the predator population always lower than the prey population?
2. Point A is the rainy season. Why is the prey population increasing?
3. Why does the predator population starts increasing after the increase in the prey population?
4. As the predator population increases, why does the prey population starts declining (point B)?
5. Why does the predator population now start to decrease (point C)?
6. Will the graph maintain the same shape if a calamity such as disease struck the prey and they died in large numbers? What do you expect will happen?
Answer these questions.
1. Why is the predator population always lower than the prey population?
2. Point A is the rainy season. Why is the prey population increasing?
3. Why does the predator population starts increasing after the increase in the prey population?
4. As the predator population increases, why does the prey population starts declining (point B)?
5. Why does the predator population now start to decrease (point C)?
6. Will the graph maintain the same shape if a calamity such as disease struck the prey and they died in large numbers? What do you expect will happen?