- ACoulombs
- BAmperes
- CVolts
- DWatts
Explanation:
The standard unit of charge is coulomb (C). Here ampere is the unit of current, volts is the unit of electric potential difference and watts is the unit of power.
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4 eV is the energy of the incident photon and the work function in 2eV. What is the stopping potential
|
(a) 2V |
(b) 4V |
(c) 6V |
(d) 2 |
X-rays are produced in laboratory by
|
(a) Radiation |
|
(b) Decomposition of the atom |
|
(c) Bombardment of high energy electron on heavy metal |
|
(d) None of these |
$\text{zero}$
$\frac{1}{8}\omega\text{Bl}^2$
$\frac{1}{2}\omega\text{Bl}^2$
$\text{B}\omega\text{l}^2$
An object of height 1.5 cm is placed on the axis of a convex lens of focal length 25 cm. A real image is formed at a distance of 75 cm from the lens. The size of the image will be
|
(a) 4.5 cm |
(b) 3.0 cm |
(c) 0.75 cm |
(d) 0.5 cm |
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 |
Following is the relation between current and charge
then value of VL will be
|
(a) |
(b) |
(c) |
(d) |
Two batteries, one of emf 18 volts and internal resistance 2Ω and the other of emf 12 volt and internal resistance 1 Ω, are connected as shown. The voltmeter V will record a reading of
|
(a) 15 volt |
(b) 30 volt |
(c) 14 volt |
(d) 18 volt |