| 1 |
<p class="MsoNormal">Which type of image is formed by a convex lens on a screen:<o:p></o:p></p> |
- A. <p class="MsoNormal">Inverted and real<o:p></o:p></p>
- B. <p class="MsoNormal">Inverted and virtual<o:p></o:p></p>
- C. <p class="MsoNormal">Upright and real<o:p></o:p></p>
- D. <p class="MsoNormal">Upright and virtual<o:p></o:p></p>
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| 2 |
The S.I unit of electric current is: |
- A. Volt
- B. Ampere
- C. Coulomb
- D. Watt
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| 3 |
<p class="MsoNormal">Electron gun has an electrode called for controlling the
flow of electrons in the beam:<o:p></o:p></p> |
- A. <p class="MsoNormal">Plate<o:p></o:p></p>
- B. <p class="MsoNormal">Grid<o:p></o:p></p>
- C. <p class="MsoNormal">Screen<o:p></o:p></p>
- D. <p class="MsoNormal">Filament<o:p></o:p></p>
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| 4 |
<p class="MsoNormal">AND operation is represented by:<o:p></o:p></p> |
- A. <p class="MsoNormal">Dot (.)<o:p></o:p></p>
- B. <p class="MsoNormal">Addition (+)<o:p></o:p></p>
- C. <p class="MsoNormal">Division (<span style="font-family: Arial, sans-serif; color: rgb(34, 34, 34); background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">÷</span>)<o:p></o:p></p>
- D. <p class="MsoNormal">Minus (-)<o:p></o:p></p>
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| 5 |
If we double both the current and the voltage in a circuit while keeping its resistance constant, the power. |
- A. remains unchanged
- B. halves
- C. doubles
- D. four time
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| 6 |
The equivalent resistance in parallel combination is: |
- A. R<sub>c</sub>=R<sub>1</sub>+R<sub>2</sub>+R<sub>3</sub> +.................+R<sub>n</sub>
- B. R<sub>c</sub>=1/R<sub>1</sub>+1/R<sub>2</sub>+1/R<sub>3</sub>+.................+1/R<sub>n</sub>
- C. a and b
- D. None of these
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| 7 |
What should household appliances be connected in parallel with the voltage source? |
- A. to increase the resistance of the circuit
- B. to decrease the resistance of the circuit
- C. to provide each appliance the same voltage as the power source
- D. to provide each appliance the same current as the power source
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| 8 |
How Galvanometer is connected in circuit to detect current? |
- A. In Series
- B. In Parallel
- C. Fixed
- D. Variable
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| 9 |
Which instrument measures the potential difference: |
- A. Voltmeter
- B. Barometer
- C. Galvanometer
- D. Ammeter
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| 10 |
The property of substance, which opposes the flow of current through it is called. |
- A. Resistance
- B. Reactance
- C. Resistivity
- D. None of these
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