Figure, shows wave fronts in still water, moving in direction of arrow towards interface PQ between

English

Gujarati

Hindi

10.Wave Optics

normal

Figure, shows wave fronts in still water, moving in the direction of the arrow towards the interface $PQ$ between a shallow region and $a$ deep(denser) region. Which of the lines shown may represent one of the wave fronts in the deep region?

$I$

$II$

$III$

$IV$

Solution

We know, when a ray (here water wave front) refracts from a rarer to denser medium it bents towards the normal of the interface. and also wave-front is perpendicular to wave motion. Ref. image The wave front we got for deep region is similar to the $(i)$ wave front in the question.

Hence option $(A)$ is correct.

Standard 12

Physics

Figure shown plane waves refracted for air to water using Huygen's principle $a, b, c, d, e$ are lengths on the diagram. The refractive index of water wrt air is the ratio.

hard

Spherical wavefronts shown in figure, strike a plane mirror. Reflected wavefront will be as shown in

hard

A light beam is incident on a denser medium whose refractive index is $1.414$ at an angle of incidence $45^o$ . Find the ratio of width of refracted beam in a medium to the width of the incident beam in air

medium

(NEET-2017)

Consider a point at the focal point of a convergent lens. Another convergent lens of short focal length is placed on the other side. What is the nature of the wavefronts emerging from the final image ?

medium

What is the shape of the wavefront in each of the following cases:

$(a)$ Light diverging from a point source.

$(b)$ Light emerging out of a convex lens when a point source is placed at its focus.

$(c)$ The portion of the wavefront of light from a distant star intercepted by the Earth.

medium

Figure, shows wave fronts in still water, moving in the direction of the arrow towards the interface $PQ$ between a shallow region and $a$ deep(denser) region. Which of the lines shown may represent one of the wave fronts in the deep region?

Solution

Similar Questions

Figure shown plane waves refracted for air to water using Huygen's principle $a, b, c, d, e$ are lengths on the diagram. The refractive index of water wrt air is the ratio.

Spherical wavefronts shown in figure, strike a plane mirror. Reflected wavefront will be as shown in

A light beam is incident on a denser medium whose refractive index is $1.414$ at an angle of incidence $45^o$ . Find the ratio of width of refracted beam in a medium to the width of the incident beam in air

Consider a point at the focal point of a convergent lens. Another convergent lens of short focal length is placed on the other side. What is the nature of the wavefronts emerging from the final image ?

What is the shape of the wavefront in each of the following cases: $(a)$ Light diverging from a point source. $(b)$ Light emerging out of a convex lens when a point source is placed at its focus. $(c)$ The portion of the wavefront of light from a distant star intercepted by the Earth.

Start a Free Trial Now

What is the shape of the wavefront in each of the following cases:

$(a)$ Light diverging from a point source.

$(b)$ Light emerging out of a convex lens when a point source is placed at its focus.

$(c)$ The portion of the wavefront of light from a distant star intercepted by the Earth.