When a \(p\) - \(n\) junction diode is connected in forward bias, its barrier potential

Two protons are kept at a separation of \(40 Å F_{n}\) is the nuclear force and \(F_{\varepsilon}\) is the electrostatic force between them. Then,

Vectors \(\mathbf{A}, \mathbf{B}\) and \(\mathbf{C}\) are such that \(\mathbf{A} \cdot \mathbf{B}=0\) and \(\mathbf{A} \cdot \mathbf{C}=0\), then the vector parallel to \(\mathbf{A}\) is

A ray of light suffers minimum deviation in equilateral prism \(P\). Additional prisms \(Q\) and \(R\) of identical shape and of same material as that of \(P\) are now combined as shown in figure. The ray will now suffer

An object of mass \(1 \mathrm{~kg}\) is allowed to hang tangentially from the rim of the wheel of radius R. When released from the rest, the block falls vertically through \(4 \mathrm{~m}\) height in 2 seconds. The moment of inertia is \(1 \mathrm{~kg} \mathrm{~m}^2\). The radius of the wheel \(\mathrm{R}\) is

A person sitting firmly over a rotating stool has his arms stretched. If he folds his arms, his angular momentum about the axis of the rotation

Bodies P, Q, R, S are labelled as having charges \(Q_P = 0.5 \times 10^{-19}C\), \(Q_Q = 0.7 \times 10^{-19}C\), \(Q_R = 2.1 \times 10^{-19}C\), \(Q_S = 4.8 \times 10^{-19}C\) respectively. Select the body having the correct charge.
[Given electronic charge \(= e = 1.6 \times 10^{-19}C\)]

The domain of the function \(\sin ^{-1}\left(x^2-4\right)\) is

A repeater in TV transmission is

The following results were obtained during study of the reaction \(2 \mathrm{NO}(\mathrm{g})+\mathrm{Cl}_2(\mathrm{~g}) \rightarrow 2 \mathrm{NOCl}(\mathrm{g})\). Determine the value of \([\mathrm{X}]\) in \(\mathrm{mol} / \mathrm{L}\)
\(\begin{array}{|c|c|c|c|} \hline \text{Experiment} & \text{[NO] mol/L} & \left[\mathrm{Cl}_2\right] \text{ mol/L} & \text{Initial rate of formation. [NOCl] mol/L/min} \\ \hline \text{I} & 0.2 & 0.2 & 6.0 \times 10^{-3} \\ \hline \text{II} & 0.2 & 0.4 & 2.4 \times 10^{-2} \\ \hline \text{III} & 0.4 & 0.2 & 1.2 \times 10^{-2} \\ \hline \text{IV} & X & 0.6 & 1.35 \times 10^{-1} \\ \hline \end{array}\)

1 kg of water at \(100^\circ\)C is converted to steam at the same temperature. Volume of 1 cc of water changes to \(1671 \times 10^3\) cc on boiling. The change in internal energy of the system is (Latent Heat of vaporisation of water is \(22.68 \times 10^5\ J\ kg^{-1}\); 1 atm \(= 1.0 \times 10^5\) Pa)

If \(A=\left[\begin{array}{ccc}0 & x & 16 \\ x & 5 & 7 \\ 0 & 9 & x\end{array}\right]\) is singular, then the possible values of \(x\) are

Two statements, one Assertion and the other Reason are given. Identify the correct option

Assertion: Primary and secondary amides on treatment with \(\mathrm{Br}_2\) and alcoholic NaOH yield primary and secondary amines respectively and the reaction involves stepping down the series.

Reason: The reaction occurs due to the migration of alkyl group from Carbonyl carbon atom to the Nitrogen atom with elimination of carbonyl group as the carbonate salt.