2. Solved Papers
  3. RAJASTHAN PMT

RAJASTHAN PMT Rajasthan - PMT Solved Paper-1999

  • question_answer
      To hear the echo in 1 second, the minimum L distance of the source from the reflecting surface should be:

    A)  28 m                    

    B)         18 m                    

    C)  19 m                    

    D)         165 m

    Correct Answer: D

    Solution :

    Distance of source from reflecting surface \[d=\frac{\upsilon t}{2}\] where \[\upsilon =\] velocity of sound, t = time of echo \[d=\frac{330\times 1}{2}=165\,m\]


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