- ARepel
- BAttract
- CStrike
- DAll
Explanation:
Like magnetic force repel each other whereas unlike magnetic poles attract each other.
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The energy required to charge a capacitor of 5μF by connecting a d.c. source of 20 kV is
|
(a) 10 kJ |
(b) 5 kJ |
(c) 2 kJ |
(d) 1 kJ |
A convex lens is made of a material having refractive index 1.2. Both the surfaces of the lens are convex. If it is dipped into water $(\mu=1.33),$ it will behave like:
The true statement is, on increasing the distance between the plates of a parallel plate condenser
|
(a) The electric intensity between the plates will decrease |
|
(b) The electric intensity between the plates will increase |
|
(c) The electric intensity between the plates will remain unchanged |
|
(d) The P.D. between the plates will decrease |
Three equal resistances each of value R are joined as shown in the figure. The equivalent resistance between M and N is

|
(a) R |
(b) 2R |
(c) |
(d) |
1 atomic mass unit is equal to
|
(a) |
(b) |
|
(c) |
(d) |