| 1 |
<p class="MsoNormal">The critical angle for a beam of light passing from water
into air is 48.8 degrees. This mean that all light rays with an angle of
incidence greater than this angle will be:<o:p></o:p></p> |
- A. <p class="MsoNormal">Absorbed<o:p></o:p></p>
- B. <p class="MsoNormal">Totally reflected<o:p></o:p></p>
- C. <p class="MsoNormal">Partially reflected and partially transmitted<o:p></o:p></p>
- D. <p class="MsoNormal">Totally transmitted<o:p></o:p></p>
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| 2 |
The S.I unit of electric power is: |
- A. Volt
- B. Watt
- C. Ampere
- D. Joule
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| 3 |
<p class="MsoNormal">Image formed on a camera is:<o:p></o:p></p> |
- A. <p class="MsoNormal">Real, inverted, and diminished<o:p></o:p></p>
- B. <p class="MsoNormal">Virtual, upright and diminished<o:p></o:p></p>
- C. <p class="MsoNormal">Virtual, upright and magnified<o:p></o:p></p>
- D. <p class="MsoNormal">Real, inverted and magnified<o:p></o:p></p>
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| 4 |
<p class="MsoNormal">The characteristics of sound by which we can distinguish
between two sounds of same loudness and pitch is called.<o:p></o:p></p> |
- A. <p class="MsoNormal">Intensity<o:p></o:p></p>
- B. <p class="MsoNormal">Quality<o:p></o:p></p>
- C. <p class="MsoNormal">Loudness<o:p></o:p></p>
- D. <p class="MsoNormal">Pitch<o:p></o:p></p>
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| 5 |
Which instrument is used to detect current? |
- A. Galvanometer
- B. Voltmeter
- C. Ammeter
- D. Electroscope
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| 6 |
Which we double the voltage in a simple electric circuit. We double the |
- A. Current
- B. Power
- C. Resistance
- D. both a and b
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| 7 |
Mathematical formula of electromotive force (e.m.f) is: |
- A. E = W/Q
- B. E = Q/W
- C. E = WQ
- D. E = W2Q
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| 8 |
The ampere is a unit of: |
- A. Energy
- B. Potential differrence
- C. Electric potential
- D. Electric current
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| 9 |
The resistance of conductors is due to: |
- A. Protons
- B. Fixed atoms
- C. Molecules
- D. Neutrons
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| 10 |
<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>
|