Physics-
General
Easy

Question

The time dependence of a physical quantity P is found to be of the form P = P subscript 0 end subscript e to the power of negative alpha t to the power of 2 end exponent end exponent where t is time and  and P0 is some constant. Then the constant  will -

  1. be dimensionless   
  2. have dimensions of T–2  
  3. have dimensions of P   
  4. have dimensions of P multiplied by T–2  

The correct answer is: have dimensions of T–2

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