Question
What happens to the motion of the particles as
temperature rises?Solution
As temperature increases, the kinetic energy of particles also increases, causing them to move faster. This phenomenon is explained by the kinetic theory of matter, which states that temperature and particle motion are directly proportional. Key Points: 1. Heat energy increases the velocity of particles. 2. Faster particle movement increases collisions, leading to expansion. 3. In gases, this results in higher pressure. 4. In liquids, faster movement lowers viscosity. 5. In solids, particles vibrate more, potentially weakening bonds. Bee Facts: • (a) Move Faster: Directly linked to an increase in kinetic energy. • (b) Move in the Same Direction: Particles move randomly, not in the same direction. • (c) Stay Stationary: Impossible, as motion increases with temperature. • (d) Slow Down: Only happens when temperature decreases.
- The selling price of an item when it is sold at a profit of 20% is Rs. 50 more than its selling price when it is sold at a loss of 15%. What should be the ...
A shopkeeper originally priced an item at 60% above its cost price and then offered a 15% discount before selling it. If the shopkeeper had initially ma...
A shopkeeper purchased an article for Rs. ‘a’ and marked it 125% above its cost price and sold it after giving two successive discounts of 250 and 1...
A trader sold two items for Rs. 150 each. He sold one at a profit of 20% and the other at a loss of 25%. What is the difference in their cost prices?
A shopkeeper marked an article ‘A’ 20% above the cost price and sold it for Rs. 1008 after giving a certain discount while he sold an article ‘B�...
A trader marked an article 80% above its cost price and sold it after allowing a discount of 40%. If the transaction resulted in a profit of Rs. 22, the...
A shopkeeper bought an article and marked it at Rs. 250. By selling the article at a discount of 4%, he earns a profit of 20%. Find the cost price of th...
Devesh sells his car to Pranav at a profit of 20% who sells it to Hemraj at a loss of 20%. Hemraj, after finding some scratches in the car, returns it t...
C and D invest in a business in a ratio of 4:5. If 10% of the total profit goes to charity and D's share is Rs.900 after the donation, what is the total...
Ravi purchased an item at a 25% reduction from its listed price and later sold it with a 10% reduction from the same price. What was Ravi's profit perce...
Relevant for Exams:
