Question:medium
Heat required to raise temperature of 2 kg substance by 5°C is 1000 J. Specific heat is:
Heat required to raise temperature of 2 kg substance by 5°C is 1000 J. Specific heat is:
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To remember the formula, think of "MCAT" (Q = m \cdot c \cdot \Delta T).
Updated On: Jun 3, 2026
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Specific heat describes how much energy is needed to change the temperature of a unit mass.
Step 2: Key Formula or Approach:
\[ Q = mc \Delta T \implies c = \frac{Q}{m \Delta T} \]
Step 3: Detailed Explanation:
\(Q = 1000\) J, \(m = 2\) kg, \(\Delta T = 5^\circ\)C.
\[ c = \frac{1000}{2 \times 5} = \frac{1000}{10} = 100 \text{ J/kg}^\circ\text{C} \]
Step 4: Final Answer:
Specific heat is 100 J/kg$^\circ$C.
Specific heat describes how much energy is needed to change the temperature of a unit mass.
Step 2: Key Formula or Approach:
\[ Q = mc \Delta T \implies c = \frac{Q}{m \Delta T} \]
Step 3: Detailed Explanation:
\(Q = 1000\) J, \(m = 2\) kg, \(\Delta T = 5^\circ\)C.
\[ c = \frac{1000}{2 \times 5} = \frac{1000}{10} = 100 \text{ J/kg}^\circ\text{C} \]
Step 4: Final Answer:
Specific heat is 100 J/kg$^\circ$C.
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