Home Physics Optical Instruments Test Online Preparation Mcqs Physics Optical Instruments Test Online Preparation Mcqs Physics Optical Instruments Test Online Preparation Mcqs With Answers Start Below 123456789101112131415Show paginator Hide paginator 7% Question 1 of 15 1. The function of collimator in spectrometer isA. To produce parallel beam of lightB. To filter the light raysC. To make them mutually perpendicularD. No functionQuestion 1 of 15 Loading... Question 2 of 15 2. Light signals pass through multimode graded index fiber due toA. Both continuous refraction and total internal reflectionB. Total internal reflectionC. DiffractionD. Continuous refractionQuestion 2 of 15 Loading... Question 3 of 15 3. The central image in compound microscope isA. Virtual, erect, and magnifiedB. Virtual, erected and magnifiedC. Real, inverted, and smaller than objectD. Erect, virtual and smaller than final imageQuestion 3 of 15 Loading... Question 4 of 15 4. Which one type of fibre is more suitable for transmission of signals in which white light is used?A. Multi mode graded index fibreB. Single mode step index fibreC. Mono mode step index fibreD. Multi mode step index fibreQuestion 4 of 15 Loading... Question 5 of 15 5. There is noticeable boundary between core and cladding forA. All types of fibreB. Multi mode graded index fibreC. Single mode step index fibreD. Multi mode step index fibreQuestion 5 of 15 Loading... Question 6 of 15 6. The speed of light in the medium of refractive index of 1.5 isA. 1.5x108ms-1B. 3x108ms-1C. 2x108ms-1D. 0.5x108mms-1Question 6 of 15 Loading... Question 7 of 15 7. Image of an object 5 mm high is only 1 cm high. Magnification produced by lens isA. 1B. 0.5C. 0.2D. 2Question 7 of 15 Loading... Question 8 of 15 8. Least distance of distinct vision of normal and healthy peopleA. Becomes infinite after 60 yearsB. Neither increases nor decreasesC. Decreases with increase in ageD. Increases with increase in ageQuestion 8 of 15 Loading... Question 9 of 15 9. Michelson devised the formula to calculate speed of lightA. c = 4fdB. c = 8fdC. c = 5/2 fdD. c = 16fdQuestion 9 of 15 Loading... Question 10 of 15 10. If an object is placed away from ‘2f’ of a converting lens, then the image will beA. Virtual and erectB. Real and invertedC. Real and erectD. VirtualQuestion 10 of 15 Loading... Question 11 of 15 11. Magnifying power of simple microscopeA. No effect with decrease or increase with focal lengthB. List distance of distinct visionC. Increase with decrease in focal lengthD. Increase with increase in focal lengthQuestion 11 of 15 Loading... Question 12 of 15 12. A surf board moves at a aped of 5ms-1on the crests of the wave. The distance between wave crests is 10m. What is the frequency of the wave motionA. 2 HzB. 10 HzC. 0.5 HzD. 5 HzQuestion 12 of 15 Loading... Question 13 of 15 13. Critical angle is that incident angle in denser medium for which angle of refraction isA. 45°B. 180°C. 0°D. 90°Question 13 of 15 Loading... Question 14 of 15 14. Michelson calculated the speed of light using the instrumentA. GalvanometerB. None of theseC. SpectrometerD. InterferometerQuestion 14 of 15 Loading... Question 15 of 15 15. Magnification of the astronomical telescope isA. (1 + fo/fe) L/foB. fe / foC. fo / feD. fo + feQuestion 15 of 15 Loading... Loading... Related Study Posts:MDCAT Test Physics Test Online PreparationASF Written Test Preparation Online McqsOnline ECAT Test Preparation McqsFPSC SST Test Preparation Mcqs OnlinePPSC Lecturer Test Preparation Online McqsLecturer Test KPPSC Preparation Mcqs OnlineTESCO Jobs Online NTS Test Preparation McqsFIA ASI Sub Inspectors Job 2024 OTS Test Preparation…SPSC SST Test Preparation Mcqs Online with SyllabusFPSC Test Preparation Mcqs Online Subject Wise