Physics-
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Easy

Question

The displacement-time graphs of two moving particles make angles of 30 degree blank a n d blank 45 degree with the x minusaxis. The ratio of their velocities is

  1. 1 blank colon blank square root of 3    
  2. 1 blank colon 2    
  3. 1 blank colon 1    
  4. square root of 3 blank colon 2    

The correct answer is: 1 blank colon blank square root of 3


    Slope of displacement time-graph is velocity
    fraction numerator v subscript 1 end subscript over denominator v subscript 2 end subscript end fraction equals fraction numerator tan invisible function application theta subscript 1 end subscript over denominator tan invisible function application theta subscript 2 end subscript end fraction equals fraction numerator tan invisible function application 30 degree over denominator tan invisible function application 45 degree end fraction equals fraction numerator 1 over denominator square root of 3 end fraction
    v subscript 1 end subscript blank colon v subscript 2 end subscript equals 1 blank colon blank square root of 3

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