MCQ
When white light enters a prism, it gets split into its constituent colours. This is due to
  • A
    High density of prism material
  • Because $\mu$ is different for different $\lambda$
  • C
    Diffraction of light
  • D
    Velocity changes for different frequencies

Answer

Correct option: B.
Because $\mu$ is different for different $\lambda$
b
(b)  For different colours $\mu$ changes so deviation of different colour is also different.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

If the wavelength of the first member of Lyman series of hydrogen is $\lambda$. The wavelength of the second member will be
What will be the projection of vector $A=\hat{i}+\hat{j}+\hat{k}$ on vector $\vec{B}=\hat{i}+\hat{j}$.
If power factor is $1/2$ in $a$ series $RL$ circuit $R = 100\,\Omega $. $ac$ mains is used then $L$ is
Three point particles $P, Q, R$ move in circle of radius $‘r’$ with different but constant speeds. They start moving at $t = 0$ from their initial positions as shown in the figure. The angular velocities (in rad/ sec) of $P, Q$ and $R$ are $5\pi , 2\pi$ & $3\pi$ respectively, in the same sense.  the number of times $P$ and $Q$ meet in that time interval is:
$A$ small particle of mass $m$ is given an initial high velocity in the horizontal plane and winds its cord around the fixed vertical shaft of radius $a$. All motion occurs essentially in horizontal plane. If the angular velocity of the cord is $\omega\, 0$ when the distance from the particle to the tangency point is $r_0$, then the angular velocity of the cord $\omega$ after it has turned through an angle $\theta$ is
The correct curve between the height or depression $h$ of liquid in a capillary tube and its radius is
Resolving power of a microscope depends upon
Two coherent sources of light interfere. The intensity ratio of two sources is $1: 4$. For this interference pattern if the value of $\frac{I_{\max }+I_{\min }}{I_{\max _{\max }}-I_{\min }}$ is equal to $\frac{2 \alpha+1}{\beta+3}$, then $\frac{\alpha}{\beta}$ will be.
A coil is placed in a magnetic field $\overrightarrow{{B}}$ as shown below:

A current is induced in the coil because $\overrightarrow{{B}}$ is:

Which of the following radiations are in correct descending order of frequencies