All India Engineering / Architecture Entrance Examination (AIEEE)

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AIEEE 2009 Physics

Q.23. A transparent solid cylindrical rod has a refractive index of  . It is surrounded by air. A light ray is incident at the mid point of one end of the rod as shown in the figure. The incident angle  for which the light ray grazes along the wall of the rod is :

Sol: 
   

Correct choice: (1)

This question contains Statement-1 and Statement -2. Of the four choices given after the statements, choose the one that best describes the two statements.

Q.24. Statement –1: For a charged particle moving from point P to point Q, the net work done by an electrostatic field on the particle is independent of the path connecting point P to point Q.

Statement –2: The net work done by a conservative force on an object moving along a closed loop is zero.

1. Statement –1 is false, Statement- 2 is true
   
   
2. Statement –1 is true, Statement- 2 is false
   
   
3. Statement –1 is true, Statement- 2 is true; Statement -2 is the correct explanation for Statement-1
   
   
4. Statement –1 is true, Statement- 2 is true; Statement -2 is not the correct explanation for Statement-1

Answer: (3)

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