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Noor, a young student, was trying to dem...

Noor, a young student, was trying to demonstrate some properties of light in her Science project work. She kept ‘X’ inside the box (as shown in the figure) and with the help of a laser pointer made light rays pass through the holes on one side of the box. She had a small butter-paper screen to see the spots of light being cast as they emerged.

What could be the ‘X’ that she placed inside the box to make the rays behave as shown?

A

a converging lens

B

a parallel-sided glass block

C

a plane mirror

D

a triangular prism

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Noor, a young student, was trying to demonstrate some properties of light in her Science project work. She kept ‘X’ inside the box (as shown in the figure) and with the help of a laser pointer made light rays pass through the holes on one side of the box. She had a small butter-paper screen to see the spots of light being cast as they emerged. If the object inside the box was made of a material with a refractive index less than 1.5 then the

Noor, a young student, was trying to demonstrate some properties of light in her Science project work. She kept ‘X’ inside the box (as shown in the figure) and with the help of a laser pointer made light rays pass through the holes on one side of the box. She had a small butter-paper screen to see the spots of light being cast as they emerged. She measured the angles of incidence for both the rays on the left side of the box to be 48.6^(@) . She knew the refractive index of the material ‘X’ inside the box was 1.5. What will be the approximate value of angle of refraction? (use the value: sin 48.6^(@) ~~ 0.75 )

Knowledge Check

  • Case : Noor, a young student, was trying to demonstrate some properties of light in her Science project work. She kept 'X' inside the box (as shown in the figure) and with the help of a laser pointer made light rays pass through the holes on one side of the box. She had a small butter-paper screen to see the spots of light being cast as they emerged. If the object inside the box was made of a material with a refractive index less than 1.5 then the :

    A
    lateral shift of the rays would have been less.
    B
    lateral shift of the rays would have been more.
    C
    lateral shift of the rays would remain the same as before.
    D
    there is not enough information to comment on any of the above statements

  • Case : Noor, a young student, was trying to demonstrate some properties of light in her Science project work. She kept 'X' inside the box (as shown in the figure) and with the help of a laser pointer made light rays pass through the holes on one side of the box. She had a small butter-paper screen to see the spots of light being cast as they emerged. She measured the angles of incidence for both the rays on the left side of the box to be 48.6^(@) . She knew the refractive index of the material 'X' inside the box was 1.5. What will be the approximate value of angle of refraction? (use the value of sin 48.6^(@)~~=0.75 )

    A
    `45^(@)`
    B
    `40^(@)`
    C
    `30^(@)`
    D
    `60^(@)`

  • Case : Noor, a young student, was trying to demonstrate some properties of light in her Science project work. She kept 'X' inside the box (as shown in the figure) and with the help of a laser pointer made light rays pass through the holes on one side of the box. She had a small butter-paper screen to see the spots of light being cast as they emerged. Her friend noted the following observations from this demonstration: (I) Glass is optically rarer than air. (II) Air and glass allow light to pass through them with the same velocity. (III) Air is optically rarer than glass. (IV) Speed of light through a denser medium is faster than that of a rarer medium. (V) The ratio: sin of angle of incidence in the first medium to the ratio of sin of angle of refraction in the second medium, gives the refractive index of the second material with respect to the first one. Which one of the combination of the above statements given below is correct.

    A
    (II), (IV) and (V) are correct
    B
    (III) and (IV) are correct
    C
    (I), (IV) and (V) are correct
    D
    (III) and (V) are correct.

    • Similar Questions

    Explore conceptually related problems

    Noor, a young student, was trying to demonstrate some properties of light in her Science project work. She kept ‘X’ inside the box (as shown in the figure) and with the help of a laser pointer made light rays pass through the holes on one side of the box. She had a small butter-paper screen to see the spots of light being cast as they emerged. Her friend noted the following observations from this demonstration: i. Glass is optically rarer than air. ii. Air and glass allow light to pass through them with the same velocity. iii. Air is optically rarer than glass. iv. Speed of light through a denser medium is faster than that of a rarer medium. v. The ratio: sin of angle of incidence in the first medium to the ratio of sin of angle of refraction in the second medium, gives the refractive index of the second material with respect to the first one. Which one of the combination of the above statements given below is correct.

    A beam of parallel light rays is incident through the holes on one side of a box and emerges out through the holes on its opposite side as shown in the diagram below: Which of the following could be inside the box?

    What is lateral displacement of a light ray passing through a glass slab ?

    For a light ray passing through a prism

    Thomas Young demonstrated interference of light in

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