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Electrostatics question

2020 · Shift 1 · Q54
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Electrostatics question

2020 · Shift 1 · Q54

JEE AdvancedPhysicsElectrostaticsMultiple correct+4 / −2
A uniform electric field, E→=−4003y^\overrightarrow E = - 400\sqrt 3 \widehat yE=−4003​y​ NC−1 is applied in a region. A charged particle of mass m carrying positive charge q is projected in this region with an initial speed of 2 10×\sqrt {10} \times10​× 106 ms−1 . This particle is aimed to hit a target T, which is 5 m away from its entry point into the field as shown schematically in the figure. Take qm{q \over m}mq​ = 1010 Ckg−1 . Then JEE Advanced 2020 Paper 1 Offline Physics - Electrostatics Question 44 English
  1. A
    the particle will hit T if projected at an angle 45o from the horizontal
  2. B
    the particle will hit T if projected either at an angle 30o or 60o from the horizontal
  3. C
    time taken by the particle to hit T could be 56μ\sqrt {{5 \over 6}} \mu65​​μ s as well as 52μ\sqrt {{5 \over 2}} \mu25​​μ s
  4. D
    time taken by the particle to hit T is 53μ\sqrt {{5 \over 3}} \mu35​​μ s
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