CBSE Physics Ray Optics And Optical Instruments Test 1 Online Mcqs Queston Answer
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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
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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. mark reviewWhich of the following phenomenon is not explained by Huygen's construction of wavefront ?

Question 1 of 15

2. mark reviewElectromagnetic 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 2 of 15

3. mark reviewRay optics is valid, when characteristic dimensions are ?

Question 3 of 15

4. mark reviewLight 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 4 of 15

5. mark reviewA point source of light is placed 4 m below the surface of water of refractive index 5/3. The minimum diameter of a disc, which should be placed over the source, on the surface of water to cut off all light coming out of water is ?

Question 5 of 15

6. mark reviewFocal 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 6 of 15

7. mark reviewThe focal lengths of a converging lens measured for violet, green and red colours are fV, fG, fR respectively. We will find

Question 7 of 15

8. mark reviewAn achromatic combination of lenses is formed by joining ?

Question 8 of 15

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

Question 9 of 15

10. mark reviewFocal length of a convex lens will be maximum for ?

Question 10 of 15

11. mark reviewOne 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 11 of 15

12. mark reviewThere is a prism with refractive index equal to √2and the refracting angle equal to 30°. One of the refracting surface of the prism is polished. A beam of monochromatic will retrace its path if its angle of incidence over the refracting surface of the prism is ?

Question 12 of 15

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

Question 13 of 15

14. mark reviewA convex lens of focal length 80 cm and a concave lens of focal length 50 cm are combined together. What will be their resulting power ?

Question 14 of 15

15. mark reviewThe hypermetropia is a ?

Question 15 of 15


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