KCET 2018

In a CE amplifier, the input AC signal to be amplified is applied across

The DC common emitter current gain of an $n-p-n$ transistor is 50 . The potential difference applied across the collector and emitter of a transistor used in CE configuration is, $V_{C E}=2 \mathrm{~V}$. If the collector resistance $R_C=4 \...

If $A=1$ and $B=0$, then in terms of Boolean algebra, $A+\bar{B}=$

The dimensions of the ratio of magnetic flux
$(\phi)$ and permeability $(\mu)$ are

In a Fraunhofer diffraction at a single slit, if yellow light illuminating that slit is replaced by blue light, then diffraction bands

In Young's double slit experiment, slits are separated by 2 mm and the screen is placed at a distance of 1.2 m from the slits. Light consisting of two wavelengths \(6500\mathop A\limits^o\) and \(5200\mathop A\limits^o\) are used to obtai...

In Young's double slit experiment, two wavelengths $\lambda_1=780 \mathrm{~nm}$ and $\lambda_2=520 \mathrm{~nm}$ are used to obtain interference fringes. If the $n^{\mathrm{th}}$ bright band due to $\lambda_1$ coincides with $(n+1)^{\text {...

A plane wavefront of wavelength $\lambda$ is incident on a single slit of width $a$. The angular width of principal maximum is

First overtone frequency of a closed pipe of length $l_1$ is equal to the second harmonic frequency of an open pipe of length $l_2$. The ratio $\frac{l_1}{l_2}$ is equal to

Two particles of masses $m_1$ and $m_2$ have equal kinetic energies. The ratio of their momentum is