Home › NEET Physics MCQs › Ray Optics and Optical Instruments
NEET & JEE · Physics · Class 12

Ray Optics and Optical Instruments — NEET Physics MCQs

30 questions written by hand against the NCERT chapter. Every wrong option is explained, not just the right one.

30questions
10/14/6easy / medium / hard
₹0no login
Take the Ray Optics and Optical Instruments test →
Free · your all-India rank after you finish

Sample questions from this chapter

What relation connects the angle of incidence i and angle of reflection r at any reflecting surface?
  1. i=r ✓
  2. i+r=90°
  3. sin i=cos r
  4. i=2r
Answer: A. The law of reflection states that incident and reflected rays make equal angles with the normal.
Why not B: Complementary angles are not the general law of reflection.
Why not C: This holds only for special angle choices and is not the reflection rule.
Why not D: The reflected ray turns through a geometry-dependent angle, but its angle with the normal equals i.
Which focal-length signs apply to spherical mirrors under the NCERT Cartesian convention for light incident from the left?
  1. Both concave and convex are positive
  2. Concave is positive and convex is negative
  3. Concave is negative and convex is positive ✓
  4. Both concave and convex are negative
Answer: C. A concave focus lies in front, opposite incident light, so f<0; a convex focus lies behind, so f>0.
Why not A: The two foci lie on opposite sides of the pole.
Why not B: This reverses the direction of each mirror's focus.
Why not D: A convex mirror focus lies behind the mirror along incident light and is positive.
A real object is 27.0 cm in front of a concave mirror of radius 36.0 cm. What are the signed image distance v and magnification m?
  1. v=−54.0 cm, m=−2.00 ✓
  2. v=+54.0 cm, m=+2.00
  3. v=−10.8 cm, m=−0.400
  4. v=+10.8 cm, m=+0.400
Answer: A. f=−18.0 cm and u=−27.0 cm give v=−54.0 cm; m=−v/u=−2.00.
Why not B: This puts a real inverted image behind the mirror and changes both signs.
Why not C: This result follows from adding rather than subtracting the signed reciprocal distances.
Why not D: This assigns the convex-mirror style virtual diminished result to a concave mirror beyond focus.

These are 3 of the 30 questions in the test. Take the full chapter test →

Read the chapter first

Every NCERT question in this chapter is solved, free: NCERT solutions — Ray Optics and Optical Instruments →

Other NEET Physics chapters

Units and MeasurementMotion in a Straight LineMotion in a PlaneLaws of MotionWork Energy and PowerSystems of Particles and Rotational Motion

All 28 chapters →

Questions

How many NEET questions are there on Ray Optics and Optical Instruments?

This chapter test has 30 questions — 10 easy, 14 medium and 6 hard — all written against the NCERT Class 12 chapter.

Is this NEET Physics chapter test free?

Yes. Every chapter test is free with no login, and you get your all-India rank on every one. Nothing on the site is on sale right now.

Do the questions explain the wrong options?

Yes — every distractor carries its own explanation naming the specific misconception that makes a student pick it. That is the part most question banks skip, and it is the part that changes your next attempt.