Physics Test - ...

In order to induce more magnetic flux, a magnetic circuit should have minimum:

Single slit diffraction is completely immersed in water without changing any other parameter. How is the width of the central maximum affected?

Which is the best conductor of electricity?

The entropy of any system is given by \(S=\alpha^2 \beta \ln \left[\frac{\mu k R}{J \beta^2}+3\right]\)

where \(\alpha\) and beta are the constants. \(mu , J, k\) and \(R\) are no. of moles, mechanical equivalent of heat, Boltzmann constant and gas constant respectively.

\(\left[\right.\) Take \(\left.S=\frac{d Q}{T}\right]\)

Choose the incorrect option from the following: 

An ideal gas has pressure \(P\) and the kinetic energy of the unit volume of the gas is \(E\). \(P\) and \(E\) are related as:

The binding energy per nucleon of \({ }_{5} B^{10}\) is \(8.0 \mathrm{MeV}\) and that of \({ }_{5} B^{11}\) is \(7.5 \mathrm{MeV}\). The Energy required to remove a neutron from \({ }_{5} B^{11}\) is (mass of electron and proton are \(9.11 \times 10^{-31} \mathrm{~kg}\) and \(1.67 \times 10^{-27}\) \(\mathrm{kg}\) ).

The atomic hydrogen emits a line spectrum consisting of various series. Which series of hydrogen atomic spectra is lying in the visible region?

Kirchhoff’s first law is a consequence of conservation of:

Practically, the work output of a machine is _______ the work input due to the effect of friction.

A galvanometer can be converted into an ammeter by connecting: