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Electrostatics question

2021 · 26 Feb · Shift 2 · Q61
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  5. /2021 · 26 Feb · Shift 2 · Q61

Electrostatics question

2021 · 26 Feb · Shift 2 · Q61

JEE MainPhysicsElectrostaticsMCQ+4 / −1
An inclined plane making an angle of 30 ∘^\circ∘ with the horizontal is placed in a uniform horizontal electric field 200NC200{N \over C}200CN​ as shown in the figure. A body of mass 1 kg and charge 5 mC is allowed to slide down from rest at a height of 1 m. If the coefficient of friction is 0.2, find the time taken by the body to reach the bottom. [g = 9.8 m/s2; sin⁡30∘=12\sin 30^\circ = {1 \over 2}sin30∘=21​; cos⁡30∘=32\cos 30^\circ = {{\sqrt 3 } \over 2}cos30∘=23​​] JEE Main 2021 (Online) 26th February Evening Shift Physics - Electrostatics Question 152 English
  1. A
    0.46 s
  2. B
    0.92 s
  3. C
    1.3 s
  4. D
    2.3 s
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