SATHEE: Properties Of Solids And Liquids Question 586

Properties Of Solids And Liquids Question 586

Question: A lead bullet of 10 g travelling at 300 m/s strikes against a block of wood and comes to rest. Assuming 50% of heat is absorbed by the bullet, the increase in its temperature is (Specific heat of lead = 150J/kg, K)

Options:

A) $100^{\circ} C$

B) $125^{\circ} C$

C) $150^{\circ} C$

D) $200^{\circ} C$

Show Answer

Answer:

Correct Answer: C

Solution:

Since specific heat of lead is given in Joules, hence use $W = Q$ instead of $W = J Q$ . $\Rightarrow$ $\frac{1}{2} \times (\frac{1}{2} m v^{2}) = m . c . Δ θ$

$\Rightarrow$ $Δ θ = \frac{v^{2}}{4 c} = \frac{{(300)}^{2}}{4 \times 150} = 150^{\circ} C$ .

Properties Of Solids And Liquids Question 586

Question: A lead bullet of 10 g travelling at 300 m/s strikes against a block of wood and comes to rest. Assuming 50% of heat is absorbed by the bullet, the increase in its temperature is (Specific heat of lead = 150J/kg, K)

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

Properties Of Solids And Liquids Question 586

Question: A lead bullet of 10 g travelling at 300 m/s strikes against a block of wood and comes to rest. Assuming 50% of heat is absorbed by the bullet, the increase in its temperature is (Specific heat of lead = 150J/kg, K)

Options:

Answer:

Solution:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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