Spherical Mirrors & Image Formation questions with solutions

Showing 1–10 of 172 questions

• Multi-correctmediumGeometrical opticsSpherical Mirrors & Image Formation

  A concave mirror forms a real image with transverse magnification -4. Which statements are correct for infinitesimal object displacements at that instant?

  Select all that apply

  • Option A

    |v/u|=4.

  • Option B

    The axial image-speed amplification magnitude is 16.

  • Option C

    A purely transverse object speed is amplified in magnitude by 4.

  • Option D

    Axial and transverse velocity amplification factors are equal.

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• MCQmediumGeometrical opticsSpherical Mirrors & Image Formation

  A real object is 30 cm from a concave mirror. It moves at 10 cm/s making 37° with the axis toward the mirror. If |f|=20 cm, the magnitude of image velocity is closest to:

  Options

  • Option A

    17.1 cm/s

  • Option B

    28.8 cm/s

  • Option C

    34.2 cm/s

  • Option D

    40 cm/s

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  JEE MainsNEET

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• NumericmediumGeometrical opticsSpherical Mirrors & Image Formation

  A concave mirror forms a real image whose area is 9 times the object area. The object is moved until image area equals object area. If |f|=18 cm, find object displacement in centimetres.

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• Multi-correctmediumGeometrical opticsSpherical Mirrors & Image Formation

  A mirror piece is translated parallel to itself in the transverse direction without rotation. Which statements are correct?

  Select all that apply

  • Option A

    Its focal length remains unchanged.

  • Option B

    Its principal axis shifts with the piece.

  • Option C

    The image formed by that piece can shift transversely.

  • Option D

    Its radius of curvature changes.

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  JEE MainsNEET

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• Multi-correctmediumGeometrical opticsSpherical Mirrors & Image Formation

  Two spherical mirrors are used successively. Which statements are essential for a correct multi-reflection calculation?

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  • Option A

    Locate the intermediate image from the first reflection.

  • Option B

    Treat that intermediate image as the object for the next mirror.

  • Option C

    Re-establish the sign convention according to the new incident-light direction.

  • Option D

    Multiply individual transverse magnifications for total transverse magnification.

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• NumericmediumGeometrical opticsSpherical Mirrors & Image Formation

  A concave mirror forms a real image with magnification -2. The object-image separation is 30 cm. Find |f| in centimetres.

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• MCQeasyGeometrical opticsSpherical Mirrors & Image Formation

  An object is placed at a distance of 40 cm from a concave mirror of focal length 15 cm. If the object is displaced through a distance of 20 cm towards the mirror, the displacement of the image will be:

  Options

  • Option A

    30 cm towards the mirror

  • Option B

    36 cm away from the mirror

  • Option C

    30 cm away from the mirror

  • Option D

    36 cm towards the mirror

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  NEET 2018NEET Previous Year

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• NumericmediumGeometrical opticsSpherical Mirrors & Image Formation

  For the same instantaneous geometry: a concave mirror of focal length 20 cm moves right at 2 cm/s; an object 30 cm to its left moves right at 5 cm/s. If the image moves opposite to the object's relative motion in the mirror frame, find its ground-frame velocity magnitude in cm/s.

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• MCQmediumGeometrical opticsSpherical Mirrors & Image Formation

  A concave mirror is kept as shown in figure. Its principal axis coincides with the x - axis. A real object is moving towards the pole of the mirror starting from the - ∞. In which region image will never form : -

  

  Options

  • Option A

    Between - ∞ and C

  • Option B

    Between C and F

  • Option C

    Between F and P

  • Option D

    Between P and + ∞

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  JEE MainsJEE Advanced

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• MCQmediumGeometrical opticsSpherical Mirrors & Image Formation

  A ray passes through the focus of a concave mirror before striking it. In the paraxial approximation the reflected ray is:

  Options

  • Option A

    Parallel to the principal axis

  • Option B

    Through C

  • Option C

    Back through F

  • Option D

    Perpendicular to the axis

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