List of top Physics Questions on applications of diode asked in MHT CET

Which of the following figure represents forward bias diode?

When LED is manufactured by using aluminium gallium arsenide (AlGaAs), it emits

Which of the following figure represents forward bias diode?

When LED is manufactured by using aluminium gallium arsenide (AlGaAs), it emits

Which of the following figure represents forward bias diode?

When LED is manufactured by using aluminium gallium arsenide (AlGaAs), it emits

A 5.0 V stabilized power supply is required to be designed using a 12 V DC power supply as input source. The maximum power rating of zener diode is 2.0 W. The minimum value of resistance $R_s$ in $\Omega$ connected in series with zener diode will be

In an $n-p-n$ transistor, the collector current is $28$ mA. If $80%$ of electrons reach the collector, its base current in mA is

In an n-p-n transistor 200 electrons enter the emitter in $10^{-8}\ \text{second}$. If $1\%$ electrons are lost in the base, then the current that enters the emitter and the current amplification factor are respectively [$e = 1.6 \times 10^{-19}\ \text{C}$]

For a common-emitter amplifier, the voltage gain is $40$. Its input and output impedances are $100\ \Omega$ and $400\ \Omega$, respectively. The power gain of the CE amplifier will be

Two identical ideal diodes are connected to an ammeter and a d.c source (1 volt) as shown. In which one of the following circuits, ammeter will not show any deflection?

A rectifier is used to

The frequency of a given a.c. signal is 'N' Hz. When it is connected to a half wave rectifier, the number of output pulses given by the rectifier in 1 second is

For emission of light, a light emitting diode (LED) is

For a common emitter configuration, if '$\alpha$' and '$\beta$' have their usual meanings, the incorrect relation between '$\alpha$' and '$\beta$' is