NEET Physics: Ray Optics — MCQ Test 3

Q6. A lens has a power of \( -5 \, \text{D} \). What is its focal length?

Q7. A convex mirror of radius of curvature \( 36 \, \text{cm} \) has an object placed \( 27 \, \text{cm} \) from it. What is the image distance?

Q8. A ray of light passes from air to crown glass (\( n = 1.52 \)) at an angle of incidence of \( 60^\circ \). What is the angle of refraction?

Q9. A concave mirror of focal length \( 9 \, \text{cm} \) has an object placed \( 18 \, \text{cm} \) from it. What is the image distance?

Q10. A convex lens of focal length \( 15 \, \text{cm} \) forms an image at \( 30 \, \text{cm} \) from the lens. What is the object distance?

Q11. A convex lens of focal length \( 20 \, \text{cm} \) forms a real image at \( 60 \, \text{cm} \) from the lens. What is the object distance?

Q12. A telescope has an objective of focal length \( 100 \, \text{cm} \) and an eyepiece of focal length \( 5 \, \text{cm} \). What is its magnifying power?

Q13. A glass slab (\( n = 1.5 \)) of thickness \( 12 \, \text{cm} \) is placed over a mark. What is the apparent shift?

Q14. A prism of refracting angle \( 40^\circ \) has a minimum deviation of \( 24^\circ \). What is the refractive index?

Q15. A convex lens of focal length \( 12 \, \text{cm} \) forms an image at \( 24 \, \text{cm} \) from the lens. What is the object distance?

NEET Physics — Ray Optics

Free MCQ Test 3 of 20

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A converging beam meets a concave lens (\( f = 10 \, \text{cm} \)) \( 4 \, \text{cm} \) before the convergence point. What is the new image distance?

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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 15 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 Converging, Convergence, Distance, Compound, Microscope, and Objective.

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 converging beam meets a concave lens (\( f = 10 \, \text{cm} \)) \( 4 \, \text{cm} \) before the convergence point. What is the new image distance?

  • A. 2 cm
  • B. 2.5 cm
  • C. 3 cm
  • D. 2.86 cm

Q2. A concave mirror has a focal length of \( 12 \, \text{cm} \). An object is placed \( 18 \, \text{cm} \) from it. What is the image distance?

  • A. 36 cm
  • B. 24 cm
  • C. 18 cm
  • D. 12 cm

Q3. A compound microscope has an objective of focal length \( 2 \, \text{cm} \) and eyepiece of focal length \( 4 \, \text{cm} \) with a tube length of \( 16 \, \text{cm} \). What is the magnification at infinity?

  • A. 40
  • B. 45
  • C. 48
  • D. 50

Q4. In a reflecting telescope, why is a concave mirror preferred over a convex lens as the objective?

  • A. It converges light more effectively
  • B. It produces a virtual image
  • C. It increases the focal length
  • D. It eliminates chromatic aberration

Q5. A glass slab (\( n = 1.62 \)) of thickness \( 8.1 \, \text{cm} \) is placed over a dot. What is the apparent shift?

  • A. 2.5 cm
  • B. 2.8 cm
  • C. 3 cm
  • D. 3.1 cm

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