2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-53

  • question_answer
    A sound wave starting from source S, follows two paths SEFD and SEABFD. Given that \[AB=l,\text{ }AE=\text{ }BE=0.6\text{ }l\] and wavelength of wave is\[\lambda =11\,m\]. If maximum sound is heard at D, then minimum value of length l is-

    A) 11 m                

    B) 6 m

    C) 2.5 m               

    D) 5 m

    Correct Answer: D

    Solution :

    For maximum path difference, \[\Delta =n\lambda \] \[2\times 0.6\ell =\pi \] \[\ell =\frac{\lambda }{1.2}=\frac{6}{1.2}\,\,=\,\,5\,m\]


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