NEET Physics: Ray Optics — MCQ Test 20

Q6. A ray of light is incident at \( 60^\circ \) on a glass-air interface (refractive index of glass = 1.5). What is the angle of refraction in air?

Q7. A ray of light passes from air (\( n = 1 \)) to glass (\( n = 1.5 \)) at an angle of incidence of \( 45^\circ \). What is the angle of refraction?

Q8. A double convex lens has radii of curvature \( 20 \, \text{cm} \) each and refractive index \( 1.5 \). What is its focal length?

Q9. A convex lens (\( f = 20 \, \text{cm} \)) and a concave lens (\( f = 40 \, \text{cm} \)) are in contact. What is the effective focal length?

Q10. An object is placed \( 8 \, \text{cm} \) from a convex mirror of radius of curvature \( 24 \, \text{cm} \). What is the image distance?

NEET PhysicsRay Optics

Free MCQ Test 20 of 20

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A prism of angle \( 45^\circ \) and refractive index \( 1.6 \) produces what minimum deviation?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Ray Optics. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Refractive, Produces, Deviation, Telescope, Objective, and Eyepiece.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. A prism of angle \( 45^\circ \) and refractive index \( 1.6 \) produces what minimum deviation?

  • A. 20°
  • B. 25°
  • C. 30°
  • D. 27°

Q2. A telescope has an objective of focal length \( 150 \, \text{cm} \) and an eyepiece of focal length \( 5 \, \text{cm} \). What is its magnifying power?

  • A. 20
  • B. 25
  • C. 30
  • D. 35

Q3. A ray of light passes from air into water (\( n = 1.33 \)) at an angle of incidence of \( 45^\circ \). What is the angle of refraction?

  • A. 32°
  • B. 35°
  • C. 40°
  • D. 45°

Q4. What is the primary reason a concave lens cannot form a real image?

  • A. It has a positive focal length
  • B. It reflects light instead of refracting
  • C. It diverges light rays
  • D. It absorbs most incident light

Q5. A prism of refracting angle \( 50^\circ \) has a minimum deviation of \( 25^\circ \). What is the refractive index?

  • A. 1.38
  • B. 1.44
  • C. 1.50
  • D. 1.60

+ 5 more questions in the actual test

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