NEET Physics: Ray Optics — MCQ Test 19

Q6. A concave mirror of radius of curvature \( 30 \, \text{cm} \) has an object placed \( 45 \, \text{cm} \) from it. What is the image distance?

Q7. A lens has a power of \( +3 \, \text{D} \). What is its focal length in centimeters?

Q8. A converging beam meets a convex lens (\( f = 15 \, \text{cm} \)) \( 10 \, \text{cm} \) before the convergence point. What is the new image distance?

Q9. A compound microscope has an objective of focal length \( 1.25 \, \text{cm} \) and eyepiece of focal length \( 5 \, \text{cm} \) with a tube length of \( 15 \, \text{cm} \). What is the magnification at infinity?

Q10. A compound microscope has an objective of focal length \( 2 \, \text{cm} \) and tube length \( 20 \, \text{cm} \). If the eyepiece magnification is \( 5 \), what is the total magnification?

NEET Physics — Ray Optics

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A simple microscope with a lens of focal length \( 10 \, \text{cm} \) forms an image at the least distance of distinct vision (\( 25 \, \text{cm} \)). What is the magnification?

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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 Microscope, Distance, Distinct, Magnification, Refractive, and Produces.

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 simple microscope with a lens of focal length \( 10 \, \text{cm} \) forms an image at the least distance of distinct vision (\( 25 \, \text{cm} \)). What is the magnification?

  • A. 2.5
  • B. 3.5
  • C. 4.5
  • D. 5.5

Q2. A prism of angle \( 30^\circ \) and refractive index \( 1.6 \) produces what minimum deviation?

  • A. 15°
  • B. 16°
  • C. 20°
  • D. 18°

Q3. A convex lens of focal length \( 20 \, \text{cm} \) forms an image at \( 40 \, \text{cm} \) from the lens. What is the object distance?

  • A. 30 cm
  • B. 40 cm
  • C. 50 cm
  • D. 60 cm

Q4. What ensures that a convex mirror produces an image smaller than the object at all positions?

  • A. Convergence of rays
  • B. Reflection at the focal point
  • C. Divergence reducing image size
  • D. Magnification exceeding unity

Q5. A prism of angle \( 40^\circ \) and refractive index \( 1.5 \) produces what minimum deviation?

  • A. 15°
  • B. 18°
  • C. 22°
  • D. 20°

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