| 1 |
Transformer works on _______ supply. |
- A. A.C
- B. D.C
- C. Battery
- D. Both A and B
|
| 2 |
<p class="MsoNormal">At room temperature, electrons cannot escape the metal
surface due to ………….. of atomic nucleus:<o:p></o:p></p> |
- A. <p class="MsoNormal">Repulsive forces<o:p></o:p></p>
- B. <p class="MsoNormal">Attractive forces<o:p></o:p></p>
- C. <p class="MsoNormal">Gravitational forces<o:p></o:p></p>
- D. <p class="MsoNormal">Electromagnetic forces<o:p></o:p></p>
|
| 3 |
<p class="MsoNormal">At mean position of pendulum, the potential energy of the
pendulum is:<o:p></o:p></p> |
- A. <p class="MsoNormal">Maximum<o:p></o:p></p>
- B. <p class="MsoNormal">Minimum<o:p></o:p></p>
- C. <p class="MsoNormal">Much more<o:p></o:p></p>
- D. <p class="MsoNormal">Both a and c<o:p></o:p></p>
|
| 4 |
A normal eye can see near objects clearly at a distance of: |
- A. 20 cm
- B. 25 cm
- C. 30 cm
- D. 35 cm
|
| 5 |
What is the power rating of a lamp connected to a 12 v source when it carries 2.5 A? |
- A. 4.8 W
- B. 14.5 W
- C. 30 W
- D. 60 W
|
| 6 |
Focal length for concave mirror is : |
- A. -ve
- B. +ve
- C. same
- D. none of these
|
| 7 |
<p class="MsoNormal">If a neutral body is brought near to the electroscope its
leaves:<o:p></o:p></p> |
- A. <p class="MsoNormal">Diverge<o:p></o:p></p>
- B. <p class="MsoNormal">Contract<o:p></o:p></p>
- C. <p class="MsoNormal">Shut<o:p></o:p></p>
- D. <p class="MsoNormal">Remain in normal position<o:p></o:p></p>
|
| 8 |
It mass of bob o a simple pendulum is doubled, its time period. |
- A. is doubled
- B. become four times
- C. remains same
- D. none of the above
|
| 9 |
If the change of current in a circuit induces a current in another circuit, this phenomena is known as: |
- A. Self induction
- B. Mutual induction
- C. Electromagnetic induction
- D. None mutual induction
|
| 10 |
The point through which rays of light pass after reflection from concave mirror is called principal: |
- A. Focus
- B. Circle
- C. Axis
- D. Radius
|
