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Most Important Selected Qs for JEE AdvancedPhysicsMotion in One Dimension

S ₁ : Two particles are in projectile motion at small height under gravity. The path of one particle as seen by another particle will be a straight line. S ₂ : If dv dx =0 at x = x ₁ and d ^2 v dx ^2 0 at x = x ₁ then v has maximum value at x = x ₁ . S ₃ : In order to cross a river of uniform width (flow is also uniform) in shortest time, swimmer must swim in perpendicular direction of river flow. S ₄ : If accelerati

Options

  1. AF F T F
  2. BF T T F
  3. CT F T F
  4. DF T F F

Correct answer

C. T F T F

Step-by-step solution

S ₁ True Both are falling under gravity. S ₂ False Function has maxima at x=x₁ , not necessary maximum value also. S ₃ True T = W V to minimize T , V will be maximum. i.e whole effort of swimmer must towards opposite bank.

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