Physics_2009_S3_Del_QP

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					2/3/2011                                           Subjective Test Paper - Physics - Meritn…




  Physics 2009 Set 3                                                                             Close


 Subjective Test




     These are additional set 3 questions.



    Question 2 ( 1.0 marks)
   At what angle of incidence should a light beam strike a glass slab of refractive index     , such that
   the reflected and the refracted rays are perpendicular to each other?


    Question 3 ( 1.0 marks)
   What is space wave propagation?


    Question 5 ( 1.0 marks)
   Name the part of electromagnetic spectrum which is suitable for

   (i) radar systems used in aircraft navigation

   (ii) treatment of cancer tumours


    Question 6 ( 1.0 marks)
   Two nuclei have mass numbers in the ratio 2: 5. W hat is the ratio of their nuclear densities?


    Question 19 ( 3.0 marks)
   State Gauss’ law in electrostatics. Use this law to derive an expression for the electric field due to an
   infinitely long straight wire of linear charge density λ Cm−1 .


    Question 23 ( 3.0 marks)
   Two parallel plate capacitors, X and Y, have the same area of plates and same separation between
   them. X has air between the plates while Y contains a dielectric medium of ∈ r = 4.




   (i) Calculate capacitance of each capacitor if equivalent capacitance of the combination is 4 µF.

   (ii) Calculate the potential difference between the plates of X and Y.

   (iii) What is the ratio of electrostatic energy stored in X and Y?




meritnation.com/…/LzGt6ClwXx4WMDe…                                                                             1/1

				
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