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Optics Physics - Optics

Maharashtra Board - STD 11 - Physics (MSBSHSE - Semi English Medium). 72 questions in this chapter.

Question types

Optics question types

72 questions across 5 question groups — pick any mix to generate a Physics paper with step-by-step answer keys.

72
Questions
5
Question groups
5
Question types
Sample Questions

Optics questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q (1 Marks)1 Mark
Consider following statements regarding a simple microscope:
(P) It allows us to keep the object within the least distance of distinct vision.
(Q) Image appears to be biggest if the object is at the focus.
(R) It is simply a convex lens.
  • A
    Only (P) is correct
  • B
    Only (P) and (Q) are correct
  • C
    Only (Q) and (R) are correct
  • ✓
    Only (P) and (R) are correct

Answer: D.

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Q 2M.C.Q (1 Marks)1 Mark
Which of the following is not involved in formation of a rainbow?
  • A
    refraction
  • B
    angular dispersion
  • C
    angular deviation
  • ✓
    total internal reflection

Answer: D.

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Q 3M.C.Q (1 Marks)1 Mark
Angles of deviation for extreme colours are given for different prisms. Select the one having maximum dispersive power of its material.
  • ✓
    7°, 10°
  • B
    8°, 11°
  • C
    12°, 16°
  • D
    10°, 14°

Answer: A.

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Q 4M.C.Q (1 Marks)1 Mark
Select the WRONG statement.
  • ✓
    Smaller angle of prism is recommended for greater angular dispersion.
  • B
    Right angled isosceles glass prism is commonly used for total internal reflection.
  • C
    Angle of deviation is practically constant for thin prisms.
  • D
    For emergent ray to be possible from the second refracting surface, certain minimum angle of incidence is necessary from the first surface.

Answer: A.

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Q 5M.C.Q (1 Marks)1 Mark
A spherical marble, of refractive index 1.5 and curvature 1.5 cm, contains a tiny air bubble at its centre. Where will it appear when seen from outside?
  • A
    1 cm inside
  • ✓
    at the centre
  • C
    $5 / 3 cm$ inside
  • D
    2 cm inside

Answer: B.

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Q 7Short Answer Type Question2 Marks
A rectangular sheet of length 30 cm and breadth 3 cm is kept on the principal axis of a concave mirror of focal length 30 cm. Draw the image formed by the mirror on the same diagram, as far as possible on scale.

Image

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Q 14Answer the following in Brief3 Marks
A point object is kept $10\ cm$ away from a double convex lens of refractive index $1.5$ and radii of curvature $10\ cm$ and $8\ cm.$ Determine location of the final image considering paraxial rays only.
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Q 18Answer the following in Detail4 Marks
A spherical surface separates two transparent media. Derive an expression that relates object and image distances with the radius of curvature for a point object. Clearly state the assumptions, if any.
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