1. | Point \(P\) moves faster than point \(Q\). |
2. | Both the points \(P\) and \(Q\) move with equal speed. |
3. | Point \(P\) has zero speed. |
4. | Point \(P\) moves slower than point \(Q\). |
List I (Spectral Lines of Hydrogen for transitions from) |
List II (Wavelength (nm)) |
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\(\mathrm{A.}\) | \(n_2=3\) to \(n_1=2\) | \(\mathrm{I.}\) | \(410.2\) |
\(\mathrm{B.}\) | \(n_2=4\) to \(n_1=2\) | \(\mathrm{II.}\) | \(434.1\) |
\(\mathrm{C.}\) | \(n_2=5\) to \(n_1=2\) | \(\mathrm{III.}\) | \(656.3\) |
\(\mathrm{D.}\) | \(n_2=6\) to \(n_1=2\) | \(\mathrm{IV.}\) | \(486.1\) |
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 \({\frac{1}{4\pi\varepsilon_0}}=9\times10^9\) SI units) |
Reason (R): | \(V=\pm{\large\frac{2P}{4\pi\varepsilon_0r^2}},\) 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). |