Brilliance of diamond is due to
|
(a) Shape |
(b) Cutting |
|
(c) Reflection |
(d) Total internal reflection |
Brilliance of diamond is due to
|
(a) Shape |
(b) Cutting |
|
(c) Reflection |
(d) Total internal reflection |
(d) Total internal reflection
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Two point charges +9e and +e are at 16 cm away from each other. Where should another charge q be placed between them so that the system remains in equilibrium
|
(a) 24 cm from +9e |
(b) 12 cm from +9e |
(c) 24 cm from +e |
(d) 12 cm from +e |
A bulb rated at (100W – 200V) is used on a 100V line. The current in the bulb is
|
(a) |
(b) 4 amp |
(c) |
(d) 2 amp |
For measurement of potential difference, potentiometer is preferred in comparison to voltmeter because
|
(a) Potentiometer is more sensitive than voltmeter |
|
(b) The resistance of potentiometer is less than voltmeter |
|
(c) Potentiometer is cheaper than voltmeter |
|
(d) Potentiometer does not take current from the circuit |
The capacity of a parallel plate condenser is 10 μF, when the distance between its plates is 8 cm. If the distance between the plates is reduced to 4 cm, then the capacity of this parallel plate condenser will be
|
(a) 5 μF |
(b) 10 μF |
(c) 20 μF |
(d) 40 μF |