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NDA Refraction of Light and Lenses — practice questions

Explore 34 free Refraction of Light and Lenses questions in NDA Science. Open each question or exercise to read its content, reference answers and available explanation.

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Refraction of Light and Lenses questions and exercises with answers

Showing questions 1–30 of 34.

CLASS10 · Physics · Light — Reflection LawsRead the answer and worked solution →CLASS10 · Physics · Refraction BasicsRead the answer and worked solution →CLASS10 · Physics · Convex or Concave LensRead the answer and worked solution →CLASS10 · Physics · Mirror TypesRead the answer and worked solution →CLASS10 · Physics · Mirror FormulaRead the answer and worked solution →Spot the wrong sign convention (CBSE Cl 10 Light)Read the answer and worked solution →Match the mirror or lens to its image property (object at 2F) (CBSE Cl 10)Read the answer and worked solution →Laws of reflection state that the angle of incidence equals the angle of reflection, AND:Read the answer and worked solution →The image formed by a plane mirror is:Read the answer and worked solution →The principal focus of a concave mirror is the point where:Read the answer and worked solution →For a spherical mirror, the relation between focal length f and radius of curvature R is:Read the answer and worked solution →The mirror formula is:Read the answer and worked solution →Magnification produced by a spherical mirror is:Read the answer and worked solution →When light passes from a less dense medium (air) into a denser medium (glass), it:Read the answer and worked solution →Snell's law of refraction is:Read the answer and worked solution →Power of a lens of focal length f (in metres) is given by:Read the answer and worked solution →A convex lens of focal length 25 cm has power equal to:Read the answer and worked solution →The lens formula for a thin lens is:Read the answer and worked solution →Total internal reflection occurs when light travels from:Read the answer and worked solution →An object placed at the focus of a concave mirror produces an image:Read the answer and worked solution →A convex lens of focal length 20 cm has an object placed at 30 cm from it. The image distance is:Read the answer and worked solution →The part of the eye that focuses light onto the retina by changing its shape is the:Read the answer and worked solution →The light-sensitive layer at the back of the eye, where the image forms, is the:Read the answer and worked solution →The defect of vision in which a person cannot see DISTANT objects clearly is:Read the answer and worked solution →Hypermetropia (far-sightedness) is corrected using:Read the answer and worked solution →The least distance of distinct vision for a normal eye is approximately:Read the answer and worked solution →Dispersion of white light by a prism produces a spectrum because:Read the answer and worked solution →A rainbow is formed by:Read the answer and worked solution →The sky appears BLUE because of:Read the answer and worked solution →The reddish appearance of the sun at sunrise and sunset is due to:Read the answer and worked solution →

Worked practice questions

CLASS10 · Physics · Light — Reflection Laws

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Matching pairs
  1. A
    Plane mirror
    B
    Image is laterally inverted
  2. A
    Concave mirror
    B
    Can form a real, magnified image
  3. A
    Convex mirror
    B
    Always forms a virtual, smaller image
  4. A
    Focal length
    B
    Half the radius of curvature
  5. A
    1/f = 1/v + 1/u
    B
    Mirror formula
  6. A
    m = h'/h
    B
    Magnification
Instructions
Match each light/mirror concept to its statement.

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CLASS10 · Physics · Refraction Basics

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Matching pairs
  1. Left
    Snell's law
    Right
    n₁ sin θ₁ = n₂ sin θ₂
  2. Left
    Refractive index n
    Right
    Speed of light in vacuum / in medium
  3. Left
    Light enters a denser medium
    Right
    Bends towards the normal
Instructions
Match each refraction concept to its rule or value.

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CLASS10 · Physics · Convex or Concave Lens

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Items
  1. Item
    Thicker at the centre
    Answer
    left
  2. Item
    Thinner at the centre
    Answer
    right
  3. Item
    Used in cameras and projectors
    Answer
    left
  4. Item
    Used to correct short-sight
    Answer
    right
  5. Item
    Forms real OR virtual image
    Answer
    left
  6. Item
    Always forms virtual image
    Answer
    right
Categories
Left
Convex (converging) lens
Right
Concave (diverging) lens
Instructions
Sort each property: convex or concave lens?

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