The equivalent capacitance in the circuit between A and B will be
|
(a) 1 μF |
(b) 2 μF |
(c) 3 μF |
(d) |
The equivalent capacitance in the circuit between A and B will be
|
(a) 1 μF |
(b) 2 μF |
(c) 3 μF |
(d) |
(c) 3 μF
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A 100 ohm galvanometer gives full scale deflection at 10 mA. How much shunt is required to read 100 mA
|
(a) 11.11 ohm |
(b) 9.9 ohm |
(c) 1.1 ohm |
(d) 4.4 ohm |
Light wave is travelling along y-direction. If the corresponding vector at any time is along the x-axis, the direction of
vector at that time is along
|
(a) y-axis |
(b) x-axis |
(c) + z-axis |
(d) – z axis |
The wavelength of most energetic X-rays emitted when a metal target is bombarded by 40KeV electrons, is approximately (h = 6.63
)
|
(a) 300 Å |
(b) 10 Å |
(c) 4 Å |
(d) 0.31 Å |
10 gm of radioactive material of half-life 15 year is kept in store for 20 years. The disintegrated material is
|
(a) 12.5 g |
(b) 10.5 g |
(c) 6.03 g |
(d) 4.03 g |
Ten electrons are equally spaced and fixed around a circle of radius R. Relative to V = 0 at infinity, the electrostatic potential V and the electric field E at the centre C are
|
(a) V ≠ 0 and |
(b) V ≠ 0 and |
(c) V = 0 and |
(d) V = 0 and |
A coil of 100 turns and area 5 square centimetre is placed in a magnetic field B = 0.2 T. The normal to the plane of the coil makes an angle of 60° with the direction of the magnetic field. The magnetic flux linked with the coil is
|
(a) 5 |
(b) 5 |
(c) |
(d) |