Q6. What is the primary reason optical fibers are bent without losing light transmission efficiency?
- A. Due to light refraction
- B. Due to increased core thickness
- C. Due to light absorption
- D. Due to sustained total internal reflection
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Sign In FreeA ray of light passes from glass () to air at an angle of incidence equal to the critical angle. What is the angle of refraction?
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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.
Key concepts covered in this specific test include Incidence, Critical, Refraction, Characteristic, Suitable, and Vehicles.
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A ray of light passes from glass () to air at an angle of incidence equal to the critical angle. What is the angle of refraction?
45°
60°
90°
0°
What characteristic of a convex mirror makes it suitable for use as a rear-view mirror in vehicles?
Provides a wide field of view with a diminished image
Forms a magnified real image
Produces an inverted image for better clarity
Converges light to a single point
Why does a reflecting telescope often use a secondary mirror in its design?
To increase chromatic aberration
To reduce the focal length
To invert the image
To redirect light to the eyepiece
In a convex mirror, what is the significance of the focal point being behind the mirror?
It indicates the mirror’s converging power
It shows where real images form
It is the point where diverging rays appear to originate
It marks the center of curvature
A telescope has an objective of focal length and an eyepiece of focal length . What is its magnifying power?
20
25
30
35
+ 10 more questions in the actual test
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