All India Engineering / Architecture Entrance Examination (AIEEE)
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AIEEE 2008 Physics
Q. 23. In an experiment, electrons are made to pass through a narrow slit of width 'd' comparable to their de Broglie wavelength. They are detected on a screen at a distance 'D' from the slit (see figure). Which of the following graphs can be expected to represent the number of electrons 'N' detected as a function of the detector position 'y' (y = 0 corresponds to the middle of the slit)?
Sol: After diffraction the electron beam will spread.
Correct answer (2)
Q. 24. In the circuit shown, A and B represent two inputs and C represents the output. The circuit represents
- NAND gate
- OR gate
- NOR gate
- AND gate
Sol: Correct answer (2)