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CBSE Physics Ray Optics and Optical Instruments Test 1 Online

Test Name Ray Optics and Optical Instruments Test
Subject CBSE Physics
Test Type MCQs
Total Question 25
Total Marks 50
Total Time 20 Minutes
Test Help For
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Central Board of Secondary Education, CBSE is main Board of Education in India to control all educational institutes Classes wise,  Physics all grades chapter wise test coverage guided material arrange in these test. Today our topic is Ray Optics and Optical Instruments test to prepare through recent syllabus. Electromagnetic Field that propagates through space carries a radiant energy. This energy can be divided into 7 radiation namely radio Waves, Micro Waves, Infrared, Visible Lights, Ultraviolet, X-Ray and Gamma Rays based on their wavelength. Take online quiz test for prepare more your knowledge about these fields.

CBSE Physics Ray Optics and Optical Instruments Test 1 Online


1. The hypermetropia is a ?

Question 1 of 15

2. If fv and fR are the focal lengths of a convex lens for violet and red light respectively and Fv and FR are the focal lengths of concave lens for violet and red light respectively, then we have ?

Question 2 of 15

3. Focal length of a convex lens of refractive index 1.5 is 2 cm. Focal length of lens when immersed in a liquid of refractive index of 1.5 will be ?

Question 3 of 15

4. Electromagnetic radiation of frequency v frequency, velocity v and wavelength λ, in air enters a glass slab of refractive index μ. The frequency, wavelength and velocity of light in the glass slab will be respectively ?

Question 4 of 15

5. Angle of deviation (∂) by prism (refractive index = μ, and supposing the angle of prism A to be small) can be given by ?

Question 5 of 15

6. One face of a rectangular glass plate 6 cm thick is silvered. An object held 8 cm in front of the first face, forms an image 12 cm behind the silvered face. The refractive index of the glass is ?

Question 6 of 15

7. Time taken by sunlight to pass through a widow of thickness 4 mm whose refractive index is 3/2 is ?

Question 7 of 15

8. Ray optics is valid, when characteristic dimensions are ?

Question 8 of 15

9. Which of the following phenomenon is not common to sound and light waves ?

Question 9 of 15

10. An achromatic combination of lenses is formed by joining ?

Question 10 of 15

11. A beam of monochromatic light is refracted from vacuum into a medium of refractive index 1.5. The wavelength of refracted light will be ?

Question 11 of 15

12. The two mirrors are kept inclined at 60° to each other and a body is placed at the middle, then total number of images formed is ?

Question 12 of 15

13. An astronomical telescope of ten-fold angular magnification has a length of 44 cm. The focal length of the objective is ?

Question 13 of 15

14. Light travels through a glass plate of thickness t and refractive index μ. If c is the speed of light in vacuum, the time taken by light to travel this thickness of glass is ?

Question 14 of 15

15. Which of the following phenomenon is not explained by Huygen's construction of wavefront ?

Question 15 of 15


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