Lenz's law is a consequence of the law of conservation of

In a biprism experiment,if the $5^{\text{th}}$ bright band with wavelength $\lambda_{1}$ coincides with the $6^{\text{th}}$ dark band with wavelength $\lambda_{2}$,then the ratio $\left(\frac{\lambda_{2}}{\lambda_{1}}\right)$ is:

Which of the following species can act as a reducing agent?

With an increase in atomic number,the melting point of alkali metals .......

Plants which are attached to the rocks are called

The currents $i_1$ and $i_2$ through the resistors $R_1(=10\,\Omega)$ and $R_2(=30\,\Omega)$ in the circuit diagram with $E_1 = 3\,V$,$E_2 = 3\,V$,and $E_3 = 2\,V$ are respectively: