All India Engineering / Architecture Entrance Examination (AIEEE)

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AIEEE 2009 Physics

Q.10. In an optics experiment, with the position of the object fixed, a student varies the position of a convex lens and for each position, the screen is adjusted to get a clear image of the object. A graph between the object distance u and the image distance v, from the lens, is plotted using the same scale for the two axes. A straight line passing through the origin and making an angle of 450 with the x-axis meets the experimental curve at P. The coordinates of P will be

1. (4f, 4f)
   
   
2. (2f, 2f)
   
   
3. 
   
   
4. (f, f)

Sol:   
 
`          
Answer: (2)

 Q.11. A thin uniform rod of length l and mass m is swinging freely about a horizontal axis passing through its end. Its maximum angular speed is . Its centre of mass rises to a maximum height of :

Answer: (1)

Q.12.    be the charge density distribution for a solid sphere of radius R and total charge Q. For a point ‘p’ inside the sphere at distance r1 from the centre of the sphere, the magnitude of electric field is:

1. 
   
   
2.   0
   
   
3. 
   
   
4. 

Sol:   
 

Answer: (4)