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Physics 2 Marks Questions

Calorimetry · Rajasthan Board (RBSE) STD 11 Science (Rajasthan - English Medium). 3 questions.

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Question 12 Marks
What is the specific heat capacity of:
  1. Melting ice
  2. Boiling water?
Answer
  1. Specific heat capacity of melting ice = 4.210 (as ice starts melting above 0°c)
  2. Specific heat capacity of boiling water = 4.219 (as water starts boiling at 100°c)
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Question 22 Marks
A calorimeter is kept in a wooden box to insulate it thermally from the surroundings. Why is it necesaary?
Answer
It is necessary because heat from environment may absorbed by the calorimeter or heat of the object may be released by the calorimeter in environment so as to measure precise quantity of heat.
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Question 32 Marks
The atmospheric temperature in the cities on sea-coast change very little. Explain.
Answer
As the specific heat of water is higher than soil or land thus lesser heat is absorbed or released than stones or land. Thus atmospheric temperature changes in very less amount.
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2 Marks Questions - Physics STD 11 Science Questions - Vidyadip