Physics-
General
Easy

Question

The displacement- time graph for two particles A and B are straight lines inclined at angles of 30 degree and 60 degree with the time axis. The ratio of velocities of V subscript A end subscript colon V subscript B end subscript is

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

The correct answer is: 1 colon 3


    fraction numerator v subscript A end subscript over denominator v subscript B end subscript end fraction equals fraction numerator tan invisible function application theta subscript A end subscript over denominator tan invisible function application theta subscript B end subscript end fraction equals fraction numerator tan invisible function application 30 degree over denominator tan invisible function application 60 degree end fraction equals fraction numerator 1 divided by square root of 3 over denominator square root of 3 end fraction equals fraction numerator 1 over denominator 3 end fraction

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