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Image formed by refraction at a single spherical surface

This type of question, asked 8 times: 8 Apr 2023, 31 Jan 2024, 23 Jan 2025, 28 Jan 2025, 29 Jan 2025, 2 Apr 2025, 3 Apr 2025, 6 Apr 2026 S1. All 8 questions below, oldest first.

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  1. Question 1

    8 Apr 2023

    119
    Two transparent media having refractive indices 1.0 and 1.5 are separated by a spherical refracting surface of radius of curvature 30 cm30\text{ }cm. The centre of curvature of surface is towards denser medium and a point object is placed on the principle axis in rarer medium at a distance of 15 cm15\text{ }cm from the pole of the surface. The distance of image from the pole of the surface is___ cmcm.

  2. Question 2

    31 Jan 2024

    112
    Light from a point source in air falls on a convex curved surface of radius 20 cm20\text{ }cm and refractive index 1.5. If the source is located at 100 cm100\text{ }cm from the convex surface, the image will be formed at ______ cmcm from the object.

  3. Question 3

    23 Jan 2025

    5
    A spherical surface of radius of curvature RR, separates air from glass (refractive index =1.5= 1.5 ). The centre of curvature is in the glass medium. A point object ' O ' placed in air on the optic axis of the surface, so that its real image is formed at ' I ' inside glass. The line OI intersects the spherical surface at PP and PO=PIPO = PI. The distance POPO equals to-

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  4. Question 4

    28 Jan 2025

    81
    In a long glass tube, mixture of two liquids A and B with refractive indices 1.3 and 1.4 respectively, forms a convex refractive meniscus towards A . If an object placed at 13 cm from the vertex of the meniscus in A forms an image with a magnification of ' -2 ' then the radius of curvature of meniscus is :

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  5. Question 5

    29 Jan 2025

    84
    Two concave refracting surfaces of equal radii of curvature and refractive index 1.5 face each other in air as shown in figure. A point object O is placed midway, between P and B. The separation between the images of O , formed by each refracting surface is :

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  6. Question 6

    2 Apr 2025

    17
    A spherical surface separates two media of refractive indices 1 and 1.5 as shown in figure Distance of the image of an object ' O ', is :( C is the center of curvature of the spherical surface and R is the radius of curvature)

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  7. Question 7

    3 Apr 2025

    96
    Light from a point source in air falls on a spherical glass surface (refractive index, μ=1.5\mu = 1.5 and radius of curvature =50 cm= 50\text{ }cm ). The image is formed at a distance of 200 cm from the glass surface inside the glass. The magnitude of distance of the light source from the glass surface is ____\_\_\_\_ m.

  8. Question 8

    6 Apr 2026 S1

    16
    A spherical interface lens of radius R separates two media of refractive indices 1 and 1.4 respectively as shown in the figure below. A point source is placed at a distance of 4 R in front of spherical interface. The magnitude of the magnification of point source image is ____\_\_\_\_ .

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