A light wave travels through three transparent materials of equal thickness. Rank in order, from the highest to lowest, the indices of refraction $n_1, n_2$ and $n_3$.
A$n_3 > n_1 > n_2$
B$n_1 < n_3 < n_2$
C$n_3 < n_1 > n_2$
D$n_2 > n_3 > n_1$
Medium
Download our app for free and get started
A$n_3 > n_1 > n_2$
a ${\lambda ^i} = \frac{\lambda }{n}$
${\lambda _2} > {\lambda _1} < {\lambda _3}$
${n_2} < {n_1} < {n_3}$
Download our app
and get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
$4.0 \,g$ of a gas occupies $22.4$ litres at $NTP.$ The specific heat capacity of the gas at constant volume is $5.0 \,\,J K^{-1} mol^{-1}$. If the speed of sound in this gas at $NTP$ is $952\, m s^{-1}$, then the heat capacity at constant pressure is .... $J K^{-1} mol^{-1}$ (Take gas constant $R = 8.3 \,\,J K^{-1} mol^{-1}$)
A transverse wave is given by $y = A\sin 2\pi \left( {\frac{t}{T} - \frac{x}{\lambda }} \right)$. The maximum particle velocity is equal to $4$ times the wave velocity when
Four wires of identical length, diameters and of the same material are stretched on a sonometre wire. If the ratio of their tensions is $1 : 4 : 9 : 16$ then the ratio of their fundamental frequencies are
The tension of a stretched string is increased by $69\%$. In order to keep its frequency of vibration constant, its length must be increased by ..... $\%$
The superposing waves are represented by the following equations :${y_1} = 5\sin 2\pi (10\,t - 0.1x)$, ${y_2} = 10\sin 2\pi (20\,t - 0.2x)$ Ratio of intensities $\frac{{{I_{\max }}}}{{{I_{\min }}}}$ will be
A tuning fork gives $4$ beats with $50 cm$ length of a sonometer wire. If the length of the wire is shortened by $1 cm$, the number of beats is still the same. The frequency of the fork is