KCET 2022

The resistivity of a semiconductor at room temperature is in between

The forbidden energy gap for Ge crystal at 0K is

Which logic gate is represented by the following combination of logic gates?

The displacement of a particle executing SHM is given by \(x=3 \sin \left[2 \pi t+\frac{\pi}{4}\right]\), where \(x\) is in metre and \(t\) is in seconds. The amplitude and maximum speed of the particles is

The Vernier scale of a travelling microscope has 50 divisions which coincides with 49 main scale divisions. If each main scale division is \(0.5 \mathrm{~mm}\), then the least count of the microscope is

For light diverging from a finite point source,

The fringe width for red colour as compared to that for violet colour is approximately

In case of Fraunhoffer diffraction at a single slit, the diffraction pattern on the screen is correct for which of the following statements?

When a compact disc (CD) is illuminated by small source of white light coloured bands are observed. This is due to

A smooth chain of length \(2 \mathrm{~m}\) is kept on a table such that its length of \(60 \mathrm{~cm}\) hangs freely from the edge of the table. The total mass of the chain is \(4 \mathrm{~kg}\). The work done in pulling the entire chain ...