Class 12 Physics MCQ Chapter 9 Ray Optics and Optical Instruments

Class 12 Physics MCQ Chapter 9 Ray Optics and Optical Instruments Solutions English Medium to each chapter is provided in the list so that you can easily browse through different chapters Class 12 Physics MCQ Chapter 9 Ray Optics and Optical Instruments Question Answer in English and select need one. AHSEC Class 12 Physics Objective Type Question Answer As Per AHSEC New Book Syllabus Download PDF. AHSEC Physics MCQ Class 12 Solutions.

Class 12 Physics MCQ Chapter 9 Ray Optics and Optical Instruments

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Also, you can read the NCERT book online in these sections Solutions by Expert Teachers as per Central Board of Secondary Education (CBSE) Book guidelines. AHSEC Class 12 Physics Multiple Choice Solutions in English Medium are part of All Subject Solutions. Here we have given AHSEC Class 12 Physics MCQ Question Answer English Medium for All Chapters, You can practice these here.

Ray Optics and Optical Instruments

Chapter: 9

1. The laws of reflection are applicable to:

(i) Plane surfaces.

(ii) Spherical surfaces.

(iii) Smooth surfaces.

(iv) All reflecting surfaces.

Ans: (iv) All reflecting surfaces.

2. A plane mirror forms:

(i) Real and inverted image.

(ii) Virtual and erect image.

(iii) Real and diminished image.

(iv) Virtual and inverted image.

Ans: (ii) Virtual and erect image.

3. If an object moves towards a plane mirror with speed v, the image approaches the object with speed:

(i) v

(ii) 2v

(iii) v/2

(iv) Zero

Ans: (ii) 2v

4. The mirror equation is:

(i) 1/f = 1/v + 1/u.

(ii) 1/v = 1/u + 1/f.

(iii) 1/f = 1/u – 1/v.

(iv) 1/f = 1/v – 1/u.

Ans: (iv) 1/f = 1/v – 1/u.

5. Power of a lens is measured in:

(i) Newton.

(ii) Dioptre.

(iii) Lux.

(iv) Watt.

Ans: (ii) Dioptre.

6. Total internal reflection occurs if:

(i) i < critical angle

(ii) i > critical angle

(iii) r = 90°

(iv) None.

Ans: (ii) i > critical angle

7. Power of accommodation of normal human eye is:

(i) 4 D.

(ii) 10 D.

(iii) 20 D.

(iv) 5 D. 

Ans: (iv) 5 D. 

8. The minimum distance for clear vision is:

(i) 10 cm.

(ii) 25 cm.

(iii) 50 cm.

(iv) 100 cm.

Ans: (ii) 25 cm.

9. Hypermetropia is corrected by:

(i) Concave lens.

(ii) Convex lens.

(iii) Bifocal lens.

(iv) Cylindrical lens.

Ans: (ii) Convex lens.

10. The magnifying power of a simple microscope is maximum when:

(i) Image is at infinity.

(ii) Image is at least distance of distinct vision.

(iii) Object is at focus.

(iv) Image is at center of curvature.

Ans: (ii) Image is at least distance of distinct vision.

11. The angular magnification of a simple microscope is:

(i) 1 + D/f

(ii) D/f

(iii) 1 – D/f

(iv) f/D

Ans: (i) 1 + D/f

12. The final image in an astronomical telescope is:

(i) Virtual and erect.

(ii) Real and erect.

(iii) Virtual and inverted.

(iv) Real and inverted. 

Ans: (iii) Virtual and inverted.

13. The objective of a telescope has:

(i) Small aperture and large focal length.

(ii) Large aperture and large focal length.

(iii) Small aperture and small focal length.

(iv) Large aperture and small focal length.

Ans: (i) Small aperture and large focal length.

14. Magnifying power of telescope in normal adjustment is:

(i) fo/fe.

(ii) fe/fo.

(iii) fo + fe.

(iv) fe – fo.

Ans: (i) fo/fe.

15. The image formed by the eyepiece is:

(i) Virtual.

(ii) Real.

(iii) Inverted.

(iv) None.

Ans: (i) Virtual.

Parimol

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