All India Engineering / Architecture Entrance Examination (AIEEE)

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AIEEE 2010 Physics

Q. 9.Two fixed frictionless inclined planes making an angle 30º and 60º with the vertical are shown in the figure. Two blocks A and B are placed on the two planes. What is the relative vertical acceleration of A with respect to B?

1. in horizontal direction
2. in vertical direction
3. Zero
4. in vertical direction

Sol:

The required relative acceleration,

Answer : (4)

Q. 10. The figure shows the position-time (x – t) graph of one-dimensional motion of a body of mass 0.4 kg. The magnitude of each impulse is

1. 0.4 Ns
2. 0.8 Ns
3. 1.6 Ns
4. 0.2 Ns

Sol:

   The velocity-time (v-t) curve of body will be,  Impulse = 0.4 x [1 – (–1)] = 0.8 Ns

Answer : (2)