All India Engineering / Architecture Entrance Examination (AIEEE)

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AIEEE 2008 Physics

Q. 14. A working transistor with its three legs marked P, Q and R is tested using a multimeter. No conduction is found between P and Q. By connecting the common (negative) terminal of the multimeter to R and the other (positive) terminal to P or Q, some resistance is seen on the multimeter. Which of the following is true for the transistor?

1. It is a pnp transistor with R as emitter
2. It is an npn transistor with R as collector
3. It is an npn transistor with R as base
4. It is a pnp transistor with R as collector

Sol: Correct answer is (3)

Q. 15. A block of mass 0.50 kg is moving with a speed of 2.00 ms^-1 on a smooth surface. It strikes another mass of 1.00 kg and then they move together as a single body. The energy loss during the collision is

1. 0.67 J
2. 0.34 J
3. 0.16 J
4. 1.00 J

Sol:

Q. 16. A wave travelling along the x-axis is described by the equation If the wavelength and the time period of the wave are 0.08 m and 2.0 s, respectively, then in appropriate units are

Sol:

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