1. | \(\mathrm{Na}\) only | 2. | \(\mathrm{Cs}\) only |
3. | Both \(\mathrm{Na}\) and \(\mathrm{K}\) | 4. | \(\mathrm{K}\) only |
1. | the electric field inside the surface is necessarily uniform. |
2. | the number of flux lines entering the surface must be equal to the number of flux lines leaving it. |
3. | the magnitude of electric field on the surface is constant. |
4. | all the charges must necessarily be inside the surface. |
Statement I: | Photovoltaic devices can convert optical radiation into electricity. |
Statement II: | Zener diode is designed to operate under reverse bias in the breakdown. |
1. | Statement I is False but Statement II is True. |
2. | Both Statement I and Statement II are True. |
3. | Both Statement I and Statement II are False. |
4. | Statement I is True but Statement II is False. |
1. | \(223\) \(\text{K}\) | 2. | \(669^\circ \mathrm{C}\) |
3. | \(3295^\circ \mathrm{C}\) | 4. | \(3097\) \(\text{K}\) |
1. | \(1.5~\text{A}\) from \(\mathrm{B}\) to \(\mathrm{A}\) through \(E\) |
2. | \(0.2~\text{A}\) from \(\mathrm{B}\) to \(\mathrm{A}\) through \(E\) |
3. | \(0.5~\text{A}\) from \(\mathrm{A}\) to \(\mathrm{B}\) through \(E\) |
4. | \(\frac{5}{9}~\text{A}\) from \(\mathrm{A}\) to \(\mathrm{B}\) through \(E\) |
1. | \(2~\text{mC}\) | 2. | \(8~\text{mC}\) |
3. | \(6~\text{mC}\) | 4. | \(4~\text{mC}\) |
1. | \(9~{\mu \text{F}}\) | 2. | \(2~{\mu \text{F}}\) |
3. | \(3~{\mu \text{F}}\) | 4. | \(6~{\mu \text{F}}\) |
1. | The principle of perpendicular axes |
2. | Huygen's principle |
3. | Bernoulli's principle |
4. | The principle of parallel axes |