Physics Optical Instruments Test 1 Online Mcqs

Maan AliLast Updated: October 13, 2025

Start your preparation for Physics Optical Instruments Test 1 Online Mcqs. This online test contains important MCQs from past papers. Attempting this test will help you prepare for Annual Exams and Entry Tests. Read the questions carefully and select the correct option below to see your result.

Important Optical Instruments Test 1 Question Answer

Total Questions: 20
Time Allowed: 10 Minutes
Total Marks: 20
How to Attempt Test: Please choose the right Option in MCQ-type question.
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Physics Optical Instruments Test 1 Practice Mcqs with Explanation

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Engineering Subject

1. In normal adjustment, the length of the telescope is

2. If the focal length of objective is 10 mm find its magnification

3. Telescope is an optical device used for viewing

4. A spectrometer is an optical device used to study the spectra from different sources of light which is

5. In an astronomical telescope the eye piece has the focal length fee is

6. When an image formed by the objective lies at the focus of both the objective and the eye-piece, the telescope is said to be in Final adjustment

7. If the focal length of eye piece is 25.0 mm find its magnification

8. The image formed after objective lens of an astronomical telescope is

9. If the magnification M₁ = 20.0 for objective and M₂ = 12.0 then total magnification is

10. In viewing the distant objects the angle subtended at the telescope is

11. The different parts of spectrometer

12. In an astronomical telescope is the objective has the focal length f₀ is

13. When an image is placed at the focal length of the eye piece, the final image formed at

14. The function of collimator is

15. A microscope has an objective lens of 10 mm focal length and an eye piece of 25.0 mm focal length what is the distance between the lenses

16. Spectrometer can measure quite accurately prism

17. Turn table is the plate form over which we place

18. A simple telescope is consists of

19. Spectrometer using diffraction grating can measure

20. Magnifying power of a astronomical telescope in normal adjustment is


 

How to Score High in Physics Optical Instruments Test 1 Online Mcqs?

Mastering scientific subjects requires conceptual clarity.

Key Preparation Tips:

  • Concepts First: Ensure you understand the underlying theories before attempting the MCQs.
  • Time Management: Attempt this online quiz multiple times to improve your speed.

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Maan AliLast Updated: October 13, 2025

Maan Ali

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2 Comments

  1. Please correct these mistakes:

    3. The revolving power of a lens is given by
    (a) R = 1/?min= D/1.22 ?

    7. A compound microscope is consists of an eye piece of focal length
    (a) Large

    Reply

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