Physics-
General
Easy

Question

An isosceles prism of angle 120° has a refractive index of 1.44. Two parallel monochromatic rays enter the prism parallel to each other in air as shown. The rays emerging from the opposite faces

  1. Are parallel to each other    
  2. Are diverging    
  3. Make an angle 2 sin to the power of negative 1 end exponent invisible function application blank left parenthesis 0.72 right parenthesis with each other    
  4. Make an angle 2 left curly bracket sin to the power of negative 1 end exponent invisible function application left parenthesis 0.72 right parenthesis minus 3 0 to the power of o end exponent right curly bracket with each other    

The correct answer is: Make an angle 2 left curly bracket sin to the power of negative 1 end exponent invisible function application left parenthesis 0.72 right parenthesis minus 3 0 to the power of o end exponent right curly bracket with each other


    At point A. fraction numerator sin invisible function application 3 0 to the power of o end exponent over denominator sin invisible function application r end fraction equals fraction numerator 1 over denominator table row cell 1.44 end cell row cell end cell row cell end cell end table end fraction

    rightwards double arrow r equals sin to the power of negative 1 end exponent invisible function application left parenthesis 0.72 right parenthesis text also end text angle B A D equals 18 0 o subscript blank minus angle r
    In rectangle ABCD, Ð A + Ð B + Ð C + Ð D = 360°
    Þ left parenthesis 180 degree minus r right parenthesis plus 60 degree plus left parenthesis 180 degree minus r right parenthesis plus theta equals 360 degree
    rightwards double arrow theta equals 2 left square bracket invisible function application s i n blank subscript negative 1 end subscript left parenthesis 0.72 right parenthesis minus 3 0 o subscript blank right square bracket

    Related Questions to study

    General
    Physics-

    An observer can see through a pin–hole the top end of a thin rod of height h, placed as shown in the figure. The beaker height is 3h and its radius h. When the beaker is filled with a liquid up to a height 2h, he can see the lower end of the rod. Then the refractive index of the liquid is

    An observer can see through a pin–hole the top end of a thin rod of height h, placed as shown in the figure. The beaker height is 3h and its radius h. When the beaker is filled with a liquid up to a height 2h, he can see the lower end of the rod. Then the refractive index of the liquid is

    Physics-General
    General
    Physics-

    A rectangular glass slab ABCD, of refractive index n1, is immersed in water of refractive index n2 (n1>n2). A ray of light in incident at the surface AB of the slab as shown. The maximum value of the angle of incidence amax, such that the ray comes out only from the other surface CD is given by

    A rectangular glass slab ABCD, of refractive index n1, is immersed in water of refractive index n2 (n1>n2). A ray of light in incident at the surface AB of the slab as shown. The maximum value of the angle of incidence amax, such that the ray comes out only from the other surface CD is given by

    Physics-General
    General
    Physics-

    A ray of light falls on the surface of a spherical glass paper weight making an angle alpha with the normal and is refracted in the medium at an angle beta. The angle of deviation of the emergent ray from the direction of the incident ray

    A ray of light falls on the surface of a spherical glass paper weight making an angle alpha with the normal and is refracted in the medium at an angle beta. The angle of deviation of the emergent ray from the direction of the incident ray

    Physics-General
    parallel
    General
    Physics-

    A square of side 3 c m is placed at a distance of 25 c m from a concave mirror of focal length 10 c m. The centre of the square is at the axis of the mirror and the plane is normal to the axis. The area enclosed by the image of the square is

    A square of side 3 c m is placed at a distance of 25 c m from a concave mirror of focal length 10 c m. The centre of the square is at the axis of the mirror and the plane is normal to the axis. The area enclosed by the image of the square is

    Physics-General
    General
    Physics-

    Two plane mirrors. A and B are aligned parallel to each other, as shown in the figure. A light ray is incident at an angle of 30 degree at a point just inside one end of A. The plane of incidence coincides with the plane of the figure. The maximum number of times the ray undergoes reflections (including the first one) before it emerges out is

    Two plane mirrors. A and B are aligned parallel to each other, as shown in the figure. A light ray is incident at an angle of 30 degree at a point just inside one end of A. The plane of incidence coincides with the plane of the figure. The maximum number of times the ray undergoes reflections (including the first one) before it emerges out is

    Physics-General
    General
    Physics-

    A point source of light B is placed at a distance L in front of the centre of a mirror of width d hung vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror at a distance 2L from it as shown. The greatest distance over which he can see the image of the light source in the mirror is

    A point source of light B is placed at a distance L in front of the centre of a mirror of width d hung vertically on a wall. A man walks in front of the mirror along a line parallel to the mirror at a distance 2L from it as shown. The greatest distance over which he can see the image of the light source in the mirror is

    Physics-General
    parallel
    General
    Physics-

    Radius of curvature of a concave spherical surface separating air-glass medium is R. A point object is placed on the principal axis in the glass (mu subscript g end subscript = 1.5). For the image to be real, seen by observer in air, distance of the object from P should be :

    Radius of curvature of a concave spherical surface separating air-glass medium is R. A point object is placed on the principal axis in the glass (mu subscript g end subscript = 1.5). For the image to be real, seen by observer in air, distance of the object from P should be :

    Physics-General
    General
    Physics-

    If an object is placed 20 cm in front of a half thin convex lens of focal length 10 cm, as shown in figure, then co-ordinate of image taking p as origin

    If an object is placed 20 cm in front of a half thin convex lens of focal length 10 cm, as shown in figure, then co-ordinate of image taking p as origin

    Physics-General
    General
    Physics-

    The Figure shows a surface XY separating two transparent media, medium-1 and medium-2. The lines ab and cd represent wave fronts of a light wave traveling in medium-1 and incident on XY. The lines ef and gh represent wave fronts of the light wave in medium-2 after refraction.
    Speed of light is

    The Figure shows a surface XY separating two transparent media, medium-1 and medium-2. The lines ab and cd represent wave fronts of a light wave traveling in medium-1 and incident on XY. The lines ef and gh represent wave fronts of the light wave in medium-2 after refraction.
    Speed of light is

    Physics-General
    parallel
    General
    Physics-

    A particle is moving with a constant velocity Vm/s along the straight line shown. An observer at the end of the same line is viewing the particle. Which of the following graphs most appropriately represent the velocity of the particle as seen by the observer? All the medium boundaries are in the state of rest

    A particle is moving with a constant velocity Vm/s along the straight line shown. An observer at the end of the same line is viewing the particle. Which of the following graphs most appropriately represent the velocity of the particle as seen by the observer? All the medium boundaries are in the state of rest

    Physics-General
    General
    Physics-

    A ray of light enters a diamond symmetrical shape (n = 2) from air and is being internally reflected near the bottom as shown in the figure. Find maximum value of angle theta possible?

    A ray of light enters a diamond symmetrical shape (n = 2) from air and is being internally reflected near the bottom as shown in the figure. Find maximum value of angle theta possible?

    Physics-General
    General
    Physics-

    A horizontal ray of light passes through a prism of mu equals 1.5 whose apex angle is 4 to the power of 0 end exponent and then strikes a vertical mirror M as shown in figure. For the ray after reflection to become horizontal, the mirror must be rotated through an angle of

    A horizontal ray of light passes through a prism of mu equals 1.5 whose apex angle is 4 to the power of 0 end exponent and then strikes a vertical mirror M as shown in figure. For the ray after reflection to become horizontal, the mirror must be rotated through an angle of

    Physics-General
    parallel
    General
    Physics-

    A light beam is traveling from region(1) to region (4) as shown in figure. The refractive in dices of regions (1),(2),(3) and (4) are mu subscript 0 end subscript,fraction numerator mu subscript 0 end subscript over denominator 2 end fraction, fraction numerator mu subscript 0 end subscript over denominator 6 end fraction, fraction numerator mu subscript 0 end subscript over denominator 8 end fraction respectively. The angle of incidence theta for which the beam just misses entering region (4) is:

    A light beam is traveling from region(1) to region (4) as shown in figure. The refractive in dices of regions (1),(2),(3) and (4) are mu subscript 0 end subscript,fraction numerator mu subscript 0 end subscript over denominator 2 end fraction, fraction numerator mu subscript 0 end subscript over denominator 6 end fraction, fraction numerator mu subscript 0 end subscript over denominator 8 end fraction respectively. The angle of incidence theta for which the beam just misses entering region (4) is:

    Physics-General
    General
    Physics-

    An observer can see through a pin hole, the top end of a thin rod of height h, placed as shown in figure. The beakers height is 3h and its radius 2h, when the beaker is filled with a liquid upto a height 2h, he can see the lower end of the rod, The refractive index of the liquid is:

    An observer can see through a pin hole, the top end of a thin rod of height h, placed as shown in figure. The beakers height is 3h and its radius 2h, when the beaker is filled with a liquid upto a height 2h, he can see the lower end of the rod, The refractive index of the liquid is:

    Physics-General
    General
    Physics-

    Assertion : A laser beam 0.2 W power can drill holes through a metal sheet, whereas 1000 W torch-light cannot.
    Reason : The frequency of laser light is much higher then that of torch light.

    Assertion : A laser beam 0.2 W power can drill holes through a metal sheet, whereas 1000 W torch-light cannot.
    Reason : The frequency of laser light is much higher then that of torch light.

    Physics-General
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.