Physics · 2017
NEET 2017 · 7 May · Code A · Q40
Preeti reached the metro station and found that the escalator was not working. She walked up the stationary escalator in time t_1. On other days, if…
Preeti reached the metro station and found that the escalator was not working. She walked up the stationary escalator in time $\displaystyle \mathrm{t}_1$. On other days, if she remains stationary on the moving escalator, then the escalator takes her up in time $\displaystyle \mathrm{t}_2$. The time taken by her to walk up on the moving escalator will be :
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle \frac{\mathrm{t}_1 \mathrm{t}_2}{\mathrm{t}_2+\mathrm{t}_1}$
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NEET (UG) 2017 Physics question, with the answer from NTA’s final answer key. Where our answers come from.