- A$\frac{1}{\omega L}$
- B$\frac{1}{\omega C}$
- C$\omega C$
- ✓$\omega L$
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Intensity of an electric field E due to a dipole, depends on distance r as
|
(a) E ∝ |
(b) E ∝ |
(c) E ∝ |
(d) E ∝ |
Two particle of equal mass m and charge q are placed at a distance of 16 cm. They do not experience any force. The value of
is
|
(a) l |
(b) |
(c) |
(d) |
The ionisation potential of H-atom is 13.6 V. When it is excited from ground state by monochromatic radiations of 970.6
the number of emission lines will be (according to Bohr’s theory)
|
(a) 10 |
(b) 8 |
(c) 6 |
(d) 4 |
In the disintegration series
the values of Z and A respectively will be
|
(a) 92, 236 |
(b) 88, 230 |
(c) 90, 234 |
(d) 91, 234 |
If a proton and anti-proton come close to each other and annihilate, how much energy will be released
|
(a) 1.5 |
(b) 3 |
(c) 4.5 |
(d) None of these |
The resistance of a coil is 4.2 Ω at 100 oC and the temperature coefficient of resistance of its material is 0.004/o C. Its resistance at 0o C is
| (a) 6.5 Ω | (b) 5 Ω |
(c) 3 Ω |
(d) 4 Ω |
The apparent depth of an object lying in a denser medium is always ......... than the real depth.
What is immaterial for an electric fuse wire
|
(a) Its specific resistance |
(b) Its radius |
|
(c) Its length |
(d) Current flowing through it |