2. Sample Papers
  3. NEET

NEET Sample Paper NEET Sample Test Paper-2

  • question_answer
    A thin sheet of glass \[(\mu =1.5)\] of thickness 6 microns introduced in the path of one of interfering beamsd of a double slit experiment shifts the central frings to a position previously occupied by fifth bright fringe. Then, the wavelength of the light used is:

    A)  \[6000\,\overset{o}{\mathop{A}}\,\]           

    B)  \[3000\,\overset{o}{\mathop{A}}\,\]

    C)  \[45000\,\overset{o}{\mathop{A}}\,\]          

    D)  \[7500\,\overset{o}{\mathop{A}}\,\]

    Correct Answer: A

    Solution :

    \[S=\frac{D}{d}\,(\mu -1)\,t=\frac{5\lambda D}{d}\](according to question)     \[\lambda =\frac{(\mu -1)t}{5}=6000\overset{o}{\mathop{A}}\,\]


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