COMEDK 2024 Evening Shift

The following are the graphs of potential barrier versus width of the depletion region for a p-n junction diode.

Which of the following is correct?

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A body is executing SHM. When its displacements from the mean position are \(4 \mathrm{~cm}\) and \(5 \mathrm{~cm}\) it has velocity \(10 \mathrm{~cms}^{-1}\) and \(8 \mathrm{~cms}^{-1}\) respectively. Its periodic time \(\mathrm{t}\) is

The dimension \([\mathrm{ML}^{-1} \mathrm{~T}^{-2}]\) is the physical quantity of

In Young's double slit experiment light of wavelength \(500 \mathrm{~nm}\) is used to form interference pattern. A uniform glass plate of refractive index 1.5 and thickness \(0.1 \mathrm{~mm}\) is introduced in the path of one of the interf...

Two narrow parallel slits illuminated by a coherent monochromatic light produces an interference pattern on a screen
placed at a distance \(\mathrm{D}\) from the slits. The separation between the dark lines of the interference pattern can b...

Incident light of wavelength \(\lambda=800 \mathrm{~nm}\) produces a diffraction pattern on a screen \(1.5 \mathrm{~m}\) away when it passes through a single slit of width \(0.5 \mathrm{~mm}\). The distance between the first dark fringes on...

A monochromatic light of wavelength \(800 \mathrm{~nm}\) is incident normally on a single slit of width \(0.020 \mathrm{~mm}\) to produce a diffraction pattern on a screen placed \(1 \mathrm{~m}\) away. Estimate the number of fringes obtain...

The number of possible natural oscillations of air column in a pipe closed at one end of length \(85 \mathrm{~cm}\) whose frequencies lie below \(1250 \mathrm{~Hz}\) are (velocity of sound \(=340 \mathrm{~ms}^{-1}\))

A scooter moves with a speed of \(7 \mathrm{~ms}^{-1}\), on a straight road and is stopped by applying the brakes. Before stopping, the scooter travels \(10 \mathrm{~m}\). If the weight of the scooter is \(\mathrm{W}\), then the total resis...

When water falls from a height of \(80 \mathrm{~m}\) at the rate of \(20 \mathrm{~kg} \mathrm{~s}^{-1}\) to operate a turbine the losses due to frictional force are \(20 \%\) of input energy. How much power is generated by the turbine?