Physics · 2025
JEE Main · 22 January 2025, Shift 2 · Q31
A force F =2 i + b j + k is applied on a particle and it undergoes a displacement i -2 j - k. What will be the value of b, if work done on the…
A force $\displaystyle \overrightarrow{\mathrm{F}}=2 \hat{i}+\mathrm{b} \hat{j}+\hat{k}$ is applied on a particle and it undergoes a displacement $\displaystyle \hat{i}-2 \hat{j}-\hat{k}$. What will be the value of $\displaystyle b$, if work done on the particle is zero.
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle \frac{1}{2}$
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JEE Main 2025 Physics question, with the answer from NTA’s final answer key. Where our answers come from.