1. | \({\dfrac{\sqrt5}{2}}\) | 2. | \({\dfrac{\sqrt3}{4}}\) |
3. | \({\dfrac{\sqrt3}{2}}\) | 4. | \({\dfrac{\sqrt5}{4}}\) |
Assertion (A): | The potential \((V)\) at any axial point, at \(2~\text m\) distance (\(r\)) from the centre of the dipole of dipole moment vector \(\vec P\) of magnitude, \(4\times10^{-6}~\text{C m},\) is \(\pm9\times10^3~\text{V}.\) (Take \({\dfrac{1}{4\pi\varepsilon_0}}=9\times10^9\) SI units) |
Reason (R): | \(V=\pm{\dfrac{2P}{4\pi\varepsilon_0r^2}},\) where \(r\) is the distance of any axial point situated at \(2~\text m\) from the centre of the dipole. |
1. | Both (A) and (R) are True and (R) is not the correct explanation of (A). |
2. | (A) is True but (R) is False. |
3. | (A) is False but (R) is True. |
4. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
1. | \(128\pi^2\) | 2. | \(50\pi^2\) |
3. | \(1280\pi^2\) | 4. | \(5\pi^2\) |
1. | there will be a central dark fringe surrounded by a few coloured fringes. |
2. | there will be a central bright white fringe surrounded by a few coloured fringes. |
3. | all bright fringes will be of equal width. |
4. | interference pattern will disappear. |
Statement I: | Atoms are electrically neutral as they contain equal number of positive and negative charges. |
Statement II: | Atoms of each element are stable and emit their characteristic spectrum. |
1. | Both Statement I and Statement II are incorrect. |
2. | Statement I is correct but Statement II is incorrect. |
3. | Statement I is incorrect but Statement II is correct. |
4. | Both Statement I and Statement II are correct. |