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Motion in A Straight Line question

2021 · 20 Jul · Shift 2 · Q47
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  5. /2021 · 20 Jul · Shift 2 · Q47

Motion in A Straight Line question

2021 · 20 Jul · Shift 2 · Q47

JEE MainPhysicsMotion in A Straight LineMCQ+4 / −1
A boy reaches the airport and finds that the escalator is not working. He walks up the stationary escalator in time t1. If he remains stationary on a moving escalator then the escalator takes him up in time t2. The time taken by him to walk up on the moving escalator will be :
  1. A
    t1t2t2−t1{{{t_1}{t_2}} \over {{t_2} - {t_1}}}t2​−t1​t1​t2​​
  2. B
    t1+t22{{{t_1} + {t_2}} \over 2}2t1​+t2​​
  3. C
    t1t2t2+t1{{{t_1}{t_2}} \over {{t_2} + {t_1}}}t2​+t1​t1​t2​​
  4. D
    t2−t1{t_2} - {t_1}t2​−t1​
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