NEET Physics: Ray Optics — MCQ Test 8

Q6. What is the primary reason optical fibers are bent without losing light transmission efficiency?

Q7. A double convex lens of refractive index \( 1.5 \) has radii of curvature \( 15 \, \text{cm} \) and \( -15 \, \text{cm} \). What is its focal length?

Q8. A telescope has an objective of focal length \( 200 \, \text{cm} \) and an eyepiece of focal length \( 10 \, \text{cm} \). What is its magnifying power?

Q9. In a convex lens, why does the image transition from virtual to real as the object moves from inside to outside the focal point?

Q10. In a prism, what condition results in the minimum deviation of light?

Q11. An object is at a depth of \( 16 \, \text{cm} \) in water (\( n = 1.33 \)). What is the apparent depth?

Q12. A ray of light passes from glass (\( n = 1.5 \)) to air at an angle of incidence of \( 40^\circ \). What is the angle of refraction?

Q13. 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?

Q14. What is the key optical principle behind the working of a periscope?

Q15. A concave lens of focal length \( 25 \, \text{cm} \) has an object placed \( 50 \, \text{cm} \) from it. What is the image distance?

NEET Physics — Ray Optics

Free MCQ Test 8 of 20

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Medium

A ray of light passes from glass (\( n = 1.62 \)) to air at an angle of incidence equal to the critical angle. What is the angle of refraction?

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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 Incidence, Critical, Refraction, Characteristic, Suitable, and Vehicles.

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 ray of light passes from glass (\( n = 1.62 \)) to air at an angle of incidence equal to the critical angle. What is the angle of refraction?

  • A. 45°
  • B. 60°
  • C. 90°
  • D. 0°

Q2. What characteristic of a convex mirror makes it suitable for use as a rear-view mirror in vehicles?

  • A. Provides a wide field of view with a diminished image
  • B. Forms a magnified real image
  • C. Produces an inverted image for better clarity
  • D. Converges light to a single point

Q3. Why does a reflecting telescope often use a secondary mirror in its design?

  • A. To increase chromatic aberration
  • B. To reduce the focal length
  • C. To invert the image
  • D. To redirect light to the eyepiece

Q4. In a convex mirror, what is the significance of the focal point being behind the mirror?

  • A. It indicates the mirror’s converging power
  • B. It shows where real images form
  • C. It is the point where diverging rays appear to originate
  • D. It marks the center of curvature

Q5. A telescope has an objective of focal length \( 120 \, \text{cm} \) and an eyepiece of focal length \( 4 \, \text{cm} \). What is its magnifying power?

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

+ 10 more questions in the actual test

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