A ray of light is incident upon an air/water | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) When light travels from one medium to another, the following changes occur:$1$. Speed of propagation $(v)$: The speed of light changes because the

Vedclass · Accepted Answer

$I, III, IV$ only

Vedclass · Answer

(D) When light travels from one medium to another, the following changes occur:$1$. Speed of propagation $(v)$: The speed of light changes because the refractive index of water is different from that of air $(v = c/n)$.$2$. Wavelength $(\lambda)$: Since $v = f \lambda$ and frequency $(f)$ remains constant while speed $(v)$ changes, the wavelength must change.$3$. Direction of propagation: According to Snell's Law, when light enters a denser medium at an angle of incidence other than $0^o$, it bends towards the normal, changing its direction.$4$. Frequency $(f)$: The frequency of light is a property of the source and does not change when light passes from one medium to another.Therefore, quantities $(I)$, $(III)$, and $(IV)$ change, while $(II)$ remains constant. The correct option is $D$.

$A$ ray of light is incident upon an air/water interface (it passes from air into water) at an angle of $45^o$. Which of the following quantities change as the light enters the water?
$(I)$ wavelength
$(II)$ frequency
$(III)$ speed of propagation
$(IV)$ direction of propagation

Similar Questions

The angle between the lines whose direction cosines satisfy the equations $l+m+n=0$ and $l^2+m^2-n^2=0$ is

The products formed when diethyl ether is reacted with cold $HI$ are

The $pK_a$ values of four carboxylic acids are $4.76, 4.19, 0.23$,and $3.41$ respectively. The $pK_a$ value of the strongest carboxylic acid among them is

Given that $K_w$ for water is $10^{-13} \ M^2$ at $62 \ ^oC$,compute the sum of $pOH$ and $pH$ for a neutral aqueous solution at $62 \ ^oC$.

Identify the correct decreasing order of the following with respect to altitude from the atmosphere:
$I$. Troposphere
$II$. Mesosphere
$III$. Thermosphere

Vedclass Test Series

Exam Paper Generator

Online Exam Module

$A$ ray of light is incident upon an air/water interface (it passes from air into water) at an angle of $45^o$. Which of the following quantities change as the light enters the water?$(I)$ wavelength$(II)$ frequency$(III)$ speed of propagation$(IV)$ direction of propagation