- Aionic
- Bmetallic
- CVan der Waals
- ✓covalent
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Statement-$I$: Figure shows the variation of stopping potential with frequency $(v)$ for the two photosensitive materials $M_1$ and $M_2$. The slope gives value of $\frac{h}{e}$, where $h$ is Planck's constant, $e$ is the charge of electron.
Statement-$II$: $M_2$ will emit photoelectrons of greater kinetic energy for the incident radiation having same frequency.
In the light of the above statements, choose the most appropriate answer from the options given below.
($1$) The $8^{\text {mh }}$ bright fringe above the point $O$ oscillates with time between two extreme positions. The separation between these two extreme positions, in micrometer $(\mu m )$, is. . . . .
($2$) The maximum speed in $\mu m / s$ at which the $8^{\text {th }}$ bright fringe will move is. . . . .
Give the answer or quetion ($1$) and ($2$)

(If initial charge is $q_{0}$ )
