Properties Of Solids And Liquids Question 56

Question: A lead ball moving with a velocity V strikes a wall and stops. If 50% of its energy is converted into heat, then what will be the increase in temperature (Specific heat of lead is S) [RPMT 1996]

Options:

A) 2V2JS

B) V24JS

C) V2J

D) V2S2J

Show Answer

Answer:

Correct Answer: B

Solution:

W=JQ

therefore 12(12mV2)=J×mSΔθ

therefore Δθ=V24JS



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