First slide

Rms speed

Question

If two balls of same metal weighing 5 g and 10 g strike with a target with the same velocity. The heat energy so developed is used for raising their temperature alone. Then the temperature will be highe

Easy

A

for bigger ball
B

for smaller ball
C

equal for both the balls
D

decrease for both the balls

Solution

$E n e r g y = \frac{1}{2} m v^{2} = m c Δ θ \Rightarrow Δ θ α v^{2}$
Temperature does not depend upon mass of the balls

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