spherical mirror questions with solutions

Showing 1–10 of 168 questions

• Multi-correctmediumGeometrical opticsspherical mirror

  A real object is at C of a concave mirror. Which statements are correct?

  Select all that apply

  • Option A

    Image is at C.

  • Option B

    Image is inverted.

  • Option C

    Magnitude of transverse magnification is 1.

  • Option D

    For an infinitesimal axial displacement, axial image-speed magnitude equals object speed magnitude at that instant.

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• NumericmediumGeometrical opticsspherical mirror

  A convex mirror forms an image whose area is one-ninth of the object area. When the object is moved 20 cm toward the mirror, image area becomes one-fourth of object area. Find the focal length magnitude in centimetres.

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• MCQdifficultGeometrical opticsspherical mirror

  A parabolic reflecting surface x = y²/2 is placed at the origin as shown. An incident ray moving along y = 1 strikes it and is reflected twice. The total deviation is π/n radians. Find n.

  

  Options

  • Option A

    2

  • Option B

    0

  • Option C

    4

  • Option D

    1

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• NumericmediumGeometrical opticsspherical mirror

  A 1 mm axial object is placed where a spherical mirror has transverse magnification magnitude 4. Find the approximate image length in mm.

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• NumericmediumGeometrical opticsspherical mirror

  A concave mirror of focal length 15 cm is cut into two pieces whose poles are at y=+3 cm and y=-3 cm, axes parallel. A point object is at y=+2 cm and 25 cm from the mirror plane. Find the vertical separation of the two images in centimetres.

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• MCQmediumGeometrical opticsspherical mirror

  A 2 cm tall object gives transverse magnification -2.5 in a concave mirror. Its image height is:

  Options

  • Option A

    +5 cm

  • Option B

    -5 cm

  • Option C

    +0.8 cm

  • Option D

    -0.8 cm

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• Multi-correctmediumGeometrical opticsspherical mirror

  A concave mirror produces a real image with |m|=3. Which quantities can be obtained immediately from |f| without solving a quadratic?

  Select all that apply

  • Option A

    Object distance |u|=4|f|/3.

  • Option B

    Image distance |v|=4|f|.

  • Option C

    Object-image separation=8|f|/3.

  • Option D

    Longitudinal magnification magnitude=9.

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• MCQmediumGeometrical opticsspherical mirror

  If the distance between object and its two times magnified virtual image produced by a curved mirror is 15 cm, the focal length of the mirror must be :

  Options

  • Option A

    15 cm

  • Option B

    –12 cm

  • Option C

    –10 cm

  • Option D

    10/3 cm

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• NumericmediumGeometrical opticsspherical mirror

  A 6 cm axial rod has its nearer end 24 cm and farther end 30 cm from a concave mirror of focal length 18 cm. Find the exact image length magnitude in centimetres.

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• MCQmediumGeometrical opticsspherical mirror

  A concave mirror forms real images with magnifications -2 and -3 at two object positions. If those positions are 10 cm apart, |f| is:

  Options

  • Option A

    30 cm

  • Option B

    45 cm

  • Option C

    60 cm

  • Option D

    90 cm

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