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Ray diverging from a point source from a...

Ray diverging from a point source from a wave front that is

A

Cylindrical

B

Spherical

C

Plane

D

Cubical

Text Solution

Verified by Experts

The correct Answer is:
B
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What is the shape of the wavelength 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 wavelength of light from a distant star intercepted by the Earth.

(a) Define a wavefront. How is it different from a ray ? (b) Depict the shape of a wavefront in each of the following cases: (i) Light diverging from a piont source. (ii) Light emerging out of a convex lens when a point source is placed at its focus.

Knowledge Check

  • Rays diverging from a point source from a ………… wavefront.

    A
    Cylindrical
    B
    Spherical
    C
    Plane
    D
    Cubical

  • Rays diverge from a point source of a wavefront that is

    A
    (a) Cylindrical
    B
    (b) Spherical
    C
    (c) Plane
    D
    (d) Cubical

  • For light diverging from a point source

    A
    the wavefront in spherical.
    B
    the intensity decreases in proportion to the distance squared.
    C
    the wavefront is parabolic.
    D
    the intensity at the wavefront does not depend on the distance.

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    A light ray emerging from the point source placed at P(1,3) is reflected at a point Q in the axis of x. If the reflected ray passes through the point R(6,7), then the abscissa of Q is:

    What is the shape of the wavefront in each of the following cases ? (a) light diverging from 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 earth.

    If A is the amplitude of the wave coming from a point source at distance r then

    IF A is the amplitude of the wave coming from a point source at distance r then

    Choose the correct option: (i) A surface on which the wave disturbance in same phase at all points is called a wavefront. (ii) The direction of a wave at a point is perpendicular to the wavefront through that point. (iii) The wavefronts of a wave originating from a point source is spherical. The wavefronts for a wave going along a fixed direction are planes perpendicular to that direction.

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