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Work Power and Energy question

2024 · 4 Apr · Shift 1 · Q66
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  5. /2024 · 4 Apr · Shift 1 · Q66

Work Power and Energy question

2024 · 4 Apr · Shift 1 · Q66

JEE MainPhysicsWork Power and EnergyMCQ+4 / −1
If a rubber ball falls from a height hhh and rebounds upto the height of h/2h / 2h/2. The percentage loss of total energy of the initial system as well as velocity ball before it strikes the ground, respectively, are :
  1. A
    50%,2gh50 \%, \sqrt{2 \mathrm{gh}}50%,2gh​
  2. B
    50%,gh50 \%, \sqrt{\mathrm{gh}}50%,gh​
  3. C
    50%, gh 250 \%, \sqrt{\frac{\text { gh }}{2}}50%,2 gh ​​
  4. D
    40%,2gh40 \%, \sqrt{2 \mathrm{gh}}40%,2gh​
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