Start learning →

AAI Junior Executive (ATC) Ray Optics and Optical Instruments — practice questions

Explore 31 free Ray Optics and Optical Instruments questions in AAI Junior Executive (ATC) Physics. Open each question or exercise to read its content, reference answers and available explanation.

Practise Ray Optics and Optical Instruments with Quill →

Ray Optics and Optical Instruments questions and exercises with answers

Showing questions 1–30 of 31.

Snell's law of refraction states:Read the answer and worked solution →For a plane mirror, image is:Read the answer and worked solution →Focal length of a concave mirror with radius of curvature R:Read the answer and worked solution →The apparent depth of an object lying at the bottom of a pool of water (n = 4/3) is, in terms of its real depth h,Read the answer and worked solution →A thin prism of refracting angle 5° is made of glass with n = 1.5. The deviation δ of a light ray passing through it is approximatelyRead 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 →

Worked practice questions

Snell's law of refraction states:

  1. n₁/sin θ = n₂
  2. n₁ sin θ₁ = n₂ sin θ₂
  3. sin θ₁ = sin θ₂
  4. n₁ cos θ₁ = n₂ cos θ₂
Show answer and solution

Correct answer: B. n₁ sin θ₁ = n₂ sin θ₂

**Snell's law:** n₁ sin θ₁ = n₂ sin θ₂, where θ₁, θ₂ are angles measured from normal. n = c/v (refractive index). When light enters denser medium, it bends toward normal.

Open this question →

For a plane mirror, image is:

  1. Virtual, inverted
  2. Real, magnified
  3. Real, inverted
  4. Virtual, erect, same size, behind mirror
Show answer and solution

Correct answer: D. Virtual, erect, same size, behind mirror

Plane mirror produces virtual (cannot be projected on screen), erect, same-size image as far behind the mirror as object is in front. Lateral inversion (left ↔ right).

Open this question →

Focal length of a concave mirror with radius of curvature R:

  1. -R
  2. 2R
  3. R/2
  4. R
Show answer and solution

Correct answer: C. R/2

f = R/2 for spherical mirrors (paraxial approximation). For concave (converging) mirror, f > 0 by convention for convex (diverging), f < 0.

Open this question →

How to practise

  1. Choose a Ray Optics and Optical Instruments question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Physics topics

Ray OpticsRay and Wave OpticsCurrent ElectricityElectric Charges and FieldsOpticsMagnetism & EMI