2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Ray Optics

JEE Main & Advanced Physics Ray Optics Question Bank Refraction of Light at Plane Surfaces

  • question_answer
    The mean distance of sun from the earth is \[1.5\times {{10}^{8}}Km\] (nearly). The time taken by the light to reach earth from the sun is                                                             [Pb. PET 2003]

    A)            0.12 min                                 

    B)            8.33 min

    C)            12.5 min                                 

    D)            6.25 min

    Correct Answer: B

    Solution :

               \[t=\frac{s}{v}\]\[=\frac{1.5\times {{10}^{8}}\times {{10}^{3}}}{3\times {{10}^{8}}}=500\,\sec \]= 8.33 min.


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