The number of photons per second on an average emitted by the source of monochromatic light of wavelength \(600\, \mathrm{~nm}\), when it delivers the power of \(3.3 \times 10^{-3}\) \(watt\) will be : \(\left(\mathrm{h}=6.6 \times 10^{-34}\, \mathrm{Js}\right)\)

A circular coil of radius \(10\; cm \;,\;500\) turns and resistance \(2\; \Omega\) is placed with its plane, perpendicular to the horizontal component of the earth's magnetic field. It is rotated about its vertical diameter through \(180^{\circ}\) in \(0.25\; s\). The induced e.m.f in the coil is (Take \(H E=\left.3.0 \times 10^{-5} \;T\right)\)

The resistance of platinum wire at \(0^{\circ}\,C\) is \(2\,\Omega\) and \(6.8\,\Omega\) at \(80^{\circ} \,C\). The temperature coefficient of resistance of the wire is :

The angular acceleration of a body, moving along the circumference of a circle, is :

A parallel plate capacitor made of circular plates is being charged such that the surface charge density on its plates is increasing at a constant rate with time. The magnetic field arising due to displacement current is :

As the temperature increases, the electrical resistance 

A satellite of mass \(m\) is orbiting the earth \((\)of radius \(R)\) at a height \(h\) from its surface. The total energy of the satellite in terms of \(g_0\), the value of acceleration due to gravity at the earth's surface, is 

Which of the following statements is incorrect?

A big circular coil of \(1000\) turns and average radius \(10\,m\) is rotating about its horizontal diameter at \(2\,rad.s ^{-1}\). If the vertical component of earth's magnetic field at that place is \(2 \times 10^{-5}\,T\) and electrical resistance of the coil is \(12.56 \,\Omega\), then the maximum induced current (in \(A\)) in the coil will be :

The pressure of \(H_2\) required to make the potential of \(H_{2}-\) electrode zero in pure water at \(298\, K\) is

What will be the sequence of \(mRNA\) produced by the following stretch of \(DNA\) ? \(3'ATGCATGCATGCATG5'\) TEMPLATE STRAND
\(5' TACGTACGTACGTAC3'\) CODING STRAND

\(\alpha\) -particle consists of 

Given below are two statements: one is labelled as Assertion \(A\) and the other is labelled as Reason \(R\). Assertion \(A\): The potential ( \(V\) ) at any axial point, at \(2 \mathrm{~m}\) distance ( \(r\) ) from the centre of the dipole of dipole moment vector \(\vec{P}\) of magnitude, \(4 \times 10^{-6} \mathrm{C} \mathrm{m}\), is \(\pm 9 \times 10^3 \mathrm{~V}\). (Take \(\frac{1}{4 \pi \epsilon_0}=9 \times 10^9 \mathrm{Sl}\) units) Reason \(R\): \(V= \pm \frac{2 P}{4 \pi \epsilon_0 r^2}\), where \(r\) is the distance of any axial point, situated at \(2 \mathrm{~m}\) from the centre of the dipole. In the light of the above statements, choose the correct answer from the options given below: