ECAT Physics Optical Instruments 1 Test Online

Photo of Maan Ali Maan AliLast Updated: May 5, 2025

Physics Optical Instruments 1 Online Test

ECAT Physics Optical Instruments 1 Chapter Online Test

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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ECAT Physics Optical Instruments 1 Test Online

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Engineering Subject

1. Spectrometer can measure quite accurately prism

2. 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

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

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

5. If the magnification M₁ = 20.0 for objective and M₂ = 12.0 then total magnification 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. Magnifying power of a astronomical telescope in normal adjustment is

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

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

10. A simple telescope is consists of

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

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

13. The different parts of spectrometer

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

15. Telescope is an optical device used for viewing

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

17. The function of collimator is

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

19. Spectrometer using diffraction grating can measure

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


 

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Photo of Maan Ali Maan AliLast Updated: May 5, 2025
Photo of Maan Ali

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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