2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Mathematical Tools, Units & Dimensions

JEE Main & Advanced Physics Mathematical Tools, Units & Dimensions Question Bank Self Evaluation Test - Physical World, Units and Measurements

  • question_answer
    The thrust developed by a rocket-motor is given by \[F=mv+A({{P}_{1}}-{{P}_{2}})\] where m is the mass of the gas ejected per unit time, v is velocity of the gas, A is area of cross-section of the nozzle, \[{{P}_{1}}\] and \[{{P}_{2}}\] are the pressures of the exhaust gas and surrounding atmosphere. The formula dimensionally

    A)  Correct

    B)  Wrong

    C)  Sometimes wrong, sometimes correct

    D)  Data is not adequate

    Correct Answer: A

    Solution :

    [a] Use principle of homogeneity.


You need to login to perform this action.
You will be redirected in 3 sec spinner