How much is the forbidden gap (approximately) in the energy bands of germanium at room temperature? 
1. \(1.1~\text{eV}\)
2. \(0.1~\text{eV}\)
3. \(0.67~\text{eV}\)
4. \(6.7~\text{eV}\)

In a good conductor, the energy gap between the conduction band and the valence band is:
1. Infinite
2. Wide
3. Narrow
4. Zero

In a semiconducting material, the mobilities of electrons and holes are \(\mu_e\) and \(\mu_{h}\) respectively. Which of the following is true?
1. \(\mu_{e} > \mu _{h}\)
2. \(\mu_{e} < \mu _{h}\)
3. \(\mu_{e} = \mu _{h}\)
4. \(\mu_{e} <0; ~\mu _{h}>0\)

1. \(1.5~\Omega\)
2. \(5~\Omega\)
3. \(6.67~\Omega\)
4. \(200~\Omega\)

The figure shows two NAND gates followed by a NOR gate. Which of the following logic gate does the figure represent?

1. OR
2. AND
3. NAND
4. None of these

The diagram of a logic circuit is given below. The output \(F\) of the circuit is represented by:
       

1. \(W(X+Y)\)
2. \(W\cdot (X\cdot Y)\)
3. \(W+ (X\cdot Y)\)
4. \(W+(X+Y)\)

Which of the following logic gate is a universal gate?
1. OR
2. NOT
3. AND
4. NOR

The correct symbol for zener diode is:

1.		2.
3.		4.