MCQ
Select correct one
- APhoto diode wroks in forward biasing
- B$LED$ works in reverse biasing
- ✓In solar cell $GaAs$ is preferred over $Si$
- DDoping of zener diode is small
✓
Answer
Correct option: C.
In solar cell $GaAs$ is preferred over $Si$
c
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Which error is removed when the known and unknown resistances are interchanged in a Meter Bridge?
The magnitude of angular momentum, orbit radius and frequency of revolution of electron in hydrogen atom corresponding to quantum number $n$ are $L, r$ and $f$ respectively. Then according to Bohr's theory of hydrogen atom,
→Two long and parallel wires are at a distance of $0.1\, m$ and a current of $5\, A$ is flowing in each of these wires. The force per unit length due to these wires will be
→The magnetic compass is not useful for navigation near the magnetic poles because
Electrical conductivity of a semiconductor
A capacitor of capacity $C$ has reactance $X$. If capacitance and frequency become double then reactance will be
→A coil has an inductance of $0.7 H$ and is joined in series with a resistance of $220\Omega$ When an alternating emf of $220V$ at $50$ cps is applied to it, then the wattless component of the current in the circuit is $(\text{take }0.7\pi=2.2)$
→$\gamma - \text{rays}$ are deflected by:
→In a potentiometer arrangement, a cell gives a balancing point at $75\, cm$ length of wire. This cell is now replaced by another cell of unknown emf. If the ratio of the emf's of two cells respectively is $3: 2$, the difference in the balancing length of the potentiometer wire in above two cases will be.........$cm .$
→Ray diagram for two lenses kept at some distance given in the diagram, which of the following option is correct $\left(f_1, f_2=\right.$ focal length, $d=$ distance between lenses $)$
→