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

$A$ ball is let fall from a height $h_0$. It makes $n$ collisions with the earth. After $n$ collisions it rebounds with a velocity $v_n$ and the ball rises to a height $h_n$. Then the coefficient of restitution is given by:

The equation of the hyperbola which passes through the point $(2,3)$ and has the asymptotes $4x+3y-7=0$ and $x-2y-1=0$ is

If $\lim _{x \rightarrow 0}\left(\frac{\cos 4 x+a \cos 2 x+b}{x^4}\right)$ is finite,then the values of $a, b$ are respectively :

In $\Delta ABC$,the expression $a(\cos^2 B + \cos^2 C) + \cos A(c \cos C + b \cos B)$ is equal to:

If $f:[-6,6] \rightarrow R$ is defined by $f(x)=x^2-3$ for $x \in R$,then $(f \circ f \circ f)(-1)+(f \circ f \circ f)(0)+(f \circ f \circ f)(1)$ is equal to

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