| 1 |
What is fitted in telephone receiver? |
- A. Electromagnet
- B. Diaphragm
- C. Both a and b
- D. None of these
|
| 2 |
<p class="MsoNormal">The unit of electric power is:<o:p></o:p></p> |
- A. <p class="MsoNormal">Volt<o:p></o:p></p>
- B. <p class="MsoNormal">Watt<o:p></o:p></p>
- C. <p class="MsoNormal">Joule<o:p></o:p></p>
- D. <p class="MsoNormal">Coulomb<o:p></o:p></p>
|
| 3 |
A converging mirror with a radius of 20 cm creates a real image 30 cm from the mirror. What is the object distance? |
- A. 5.0 cm
- B. 7.5 cm
- C. 15 cm
- D. 20 cm
|
| 4 |
<p class="MsoNormal">Sound waves having frequency higher than 20,000 Hz are
called:<o:p></o:p></p> |
- A. <p class="MsoNormal">Ultrasonic<o:p></o:p></p>
- B. <p class="MsoNormal">Infrasonic<o:p></o:p></p>
- C. <p class="MsoNormal">Audible<o:p></o:p></p>
- D. <p class="MsoNormal">Echo<o:p></o:p></p>
|
| 5 |
Sun light consist of ____________ colour |
|
| 6 |
<p class="MsoNormal">The mirror whose inner surface is reflecting is called:<o:p></o:p></p> |
- A. <p class="MsoNormal">Concave mirror<o:p></o:p></p>
- B. <p class="MsoNormal">Convex mirror<o:p></o:p></p>
- C. <p class="MsoNormal">Mirror<o:p></o:p></p>
- D. <p class="MsoNormal">Lens<o:p></o:p></p>
|
| 7 |
Half of radius of curvature is called: |
- A. Focal length
- B. Principal focus
- C. Axis
- D. None of these
|
| 8 |
The displacement produced in the spring directly proportional to force is called: |
- A. Hook's law
- B. Boyle's law
- C. Newton's law
- D. both 'b' and 'c'
|
| 9 |
The lines will be in the form of concentric circles, if conductor is: |
- A. Circular
- B. Straight
- C. Solenoid
- D. None of these
|
| 10 |
A and B are the two inputs of a NOR gate. Its output would be 1 when: |
- A. A = 1, B = 1
- B. A = 0 , B = 1
- C. A = 1, B = 0
- D. A = 0 , B = 0
|
