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AP EAMCET202317 May 2023Morning ShiftPhysicsThermal Properties of MatterActual

A steel ball of mass 200 ~g falls freely from a height of 20 m and bounces to a height of 10.8 ~m from the ground. If the energy lost in this process is absorbed by the ball, the rise in its temperature is ( g =10 ~ms ⁻² , specific heat capacity of steel is 460 Jkg ⁻¹ ~K ⁻¹ )

Options

  1. A0.1^ C
  2. B1^ C
  3. C0.2^ C
  4. D2^ C

Correct answer

D. 2^ C

Step-by-step solution

Apply the conservation of energy mg ( h ₁- h ₂ )= mc T aligned & 10 (20-10.8)=460 T & 92 460 = T T =2^ C aligned

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