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MCQEasyJEE Main 2025 · 4 April, Shift 1Torque & Angular Momentum

Physics Question from JEE Main 2025 · 4 April, Shift 1

Which of the following are correct expression for torque acting on a body?

A. τ⃗=r⃗×L⃗\vec{\tau}=\vec{\mathrm{r}} \times \vec{\mathrm{L}}

B. τ⃗=ddt(r⃗×p⃗)\vec{\tau}=\frac{\mathrm{d}}{\mathrm{dt}}(\vec{\mathrm{r}} \times \vec{\mathrm{p}})

C. τ⃗=r⃗×dp⃗dt\vec{\tau}=\vec{\mathrm{r}} \times \frac{\mathrm{d} \vec{\mathrm{p}}}{\mathrm{dt}}

D. τ⃗=Iα⃗\vec{\tau}=\mathrm{I} \vec{\alpha}

E. τ⃗=r⃗×F⃗\vec{\tau}=\vec{\mathrm{r}} \times \vec{\mathrm{F}}

(r⃗=\vec{r}= position vector; p⃗=\vec{\mathrm{p}}= linear momentum; L⃗=\vec{\mathrm{L}}= angular momentum; α⃗=\vec{\alpha}= angular acceleration; I=\mathrm{I}= moment of inertia; F⃗=\vec{\mathrm{F}}= force; t=\mathrm{t}= time)

Choose the correct answer from the options given below:

  • A

    B, D and E Only

  • B

    C and D Only

  • C

    B, C, D and E Only

  • D

    A, B, D and E Only

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