| 1 |
A.C generator works on the principle of: |
- A. Electrostatic induction
- B. Electromagnetic induction
- C. Law of gravitation
- D. Third law of motion
|
| 2 |
The wave properties |
- A. Reflection
- B. Refraction
- C. Diffraction
- D. All of these
|
| 3 |
<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>
|
| 4 |
<p class="MsoNormal">When we heat the metal at high temperature they emit:<o:p></o:p></p> |
- A. <p class="MsoNormal">Holes<o:p></o:p></p>
- B. <p class="MsoNormal">Protons<o:p></o:p></p>
- C. <p class="MsoNormal">Neutrons<o:p></o:p></p>
- D. <p class="MsoNormal">Electrons<o:p></o:p></p>
|
| 5 |
The digits used in electronics are: |
- A. 1
- B. 0
- C. 0 and 1
- D. 1 and 2
|
| 6 |
As the temperature of a conductor rises, its resistance. |
- A. Increase
- B. Decrease
- C. Does not change
- D. None of these
|
| 7 |
How does sound travel from its source to your ear? |
- A. Byc changes in air pressure
- B. By vibration in wires or strings
- C. By electromagnetic waves
- D. By infrared waves
|
| 8 |
Short form of information Technology is: |
- A. IT
- B. ITS
- C. CBIS
- D. IS
|
| 9 |
At extreme position potential energy of the pendulum is |
- A. Maximum
- B. Miimum
- C. a and b
- D. zero
|
| 10 |
The basic operations performed by a computer are. |
- A. arithmetic operations
- B. non arithmetic operations
- C. logical operation
- D. both a and c
|
