- A$V=C Q$
- B$C=V Q$
- ✓$V=\frac{Q}{C}$
- D$Q =\frac{ V }{ C }$
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According to Bohr's model, the radius of the second orbit of helium atom is
|
(a) 0.53 Å |
(b) 1.06 Å |
(c) 2.12 Å |
(d) 0.265 Å |
A radioactive substance has an average life of 5 hours. In a time of 5 hours
|
(a) Half of the active nuclei decay |
(b) Less than half of the active nuclei decay |
|
(c) More than half of the active nuclei decay |
(d) All active nuclei decay |
TV waves have a wavelength range of 1-10 meter. Their frequency range in MHz is
| (a) 30-300 | (b) 3-30 | (c) 300-3000 | (d) 3-3000 |
In the process of electrolysis, the current is carried out inside the electrolyte by
|
(a) Electrons |
(b) Atoms |
|
(c) Positive and negative ions |
(d) All the above |
$\frac{1}{\lambda}$
$\Big(\text{ln}\frac{2}{\lambda}\Big)$
$\lambda(\text{ln}2)$
$\frac{\lambda}{(\text{ln})2}$
The maximum current that can be measured by a galvanometer of resistance 40 W is 10 mA. It is converted into a voltmeter that can read upto 50 V. The resistance to be connected in series with the galvanometer is ... (in ohm)
|
(a) 5040 |
(b) 4960 |
(c) 2010 |
(d) 4050 |