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Indian Navy SSR Ray Optics and Optical Instruments — practice questions

Explore 29 free Ray Optics and Optical Instruments questions in Indian Navy SSR Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Ray Optics and Optical Instruments questions and exercises with answers

Showing questions 1–29 of 29.

Two thin lenses of powers P₁ and P₂ in contact give combined power:Read the answer and worked solution →Refraction — true or false?Read the answer and worked solution →Find the property that does not match concave mirrorsRead the answer and worked solution →Cartesian sign convention: positive or negative?Read the answer and worked solution →True or false: the sign conventionRead the answer and worked solution →Complete the condition for total internal reflectionRead the answer and worked solution →Tap every example of total internal reflectionRead the answer and worked solution →Critical angleRead the answer and worked solution →True or false: optical fibresRead the answer and worked solution →Match each formula to what it describesRead the answer and worked solution →Converging or diverging?Read the answer and worked solution →Complete the definition of lens powerRead the answer and worked solution →Lenses in contactRead the answer and worked solution →Order the steps: solve a mirror problemRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Match each instrument to its magnifying powerRead the answer and worked solution →True or false: optical instrumentsRead the answer and worked solution →Which instrument does this belong to?Read the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Tap every statement true of refractionRead the answer and worked solution →Complete the prism relationRead the answer and worked solution →Flip and pair: symbol with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Reading the laws backRead the answer and worked solution →Order the reasoning: why an optical fibre worksRead the answer and worked solution →True or false: mirrors and lensesRead the answer and worked solution →Assertion and reason: instrumentsRead the answer and worked solution →Which quantity is being described?Read the answer and worked solution →

Worked practice questions

Two thin lenses of powers P₁ and P₂ in contact give combined power:

  1. P₁ - P₂
  2. P₁ × P₂
  3. P₁ + P₂
  4. sqrt(P₁ P₂)
Show answer and solution

Correct answer: C. P₁ + P₂

**In contact:** powers add (P = P₁ + P₂). **Equivalent focal length:** 1/f = 1/f₁ + 1/f₂. Used to design corrective lens systems.

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Refraction — true or false?

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Questions
  1. Statement is true
    Yes
    Statement
    Light bends towards the normal when entering a denser medium.
  2. Statement is true
    Yes
    Statement
    Snell's law states n₁sinθ₁ = n₂sinθ₂.
  3. Statement is true
    No
    Statement
    Frequency of light changes during refraction.
  4. Statement is true
    No
    Statement
    Total internal reflection happens going from rarer to denser medium.
  5. Statement is true
    Yes
    Statement
    A mirage is caused by refraction in air layers of different densities.

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Find the property that does not match concave mirrors

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Questions
  1. Items
    1. Always forms diminished image
    2. Can form real image
    3. Can form virtual image
    4. Used in shaving mirrors
    Reason
    Concave mirrors can form magnified or diminished images depending on object position.
    Odd item
    Always forms diminished image
  2. Items
    1. Always forms virtual image
    2. Forms real image when object close
    3. Always forms erect image
    4. Always forms diminished image
    Reason
    Convex mirrors never form real images.
    Odd item
    Forms real image when object close

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