Physics ICS Part 1 Chapter 10 Online Test With Answers

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Physics ICS Part 1 Chapter 10 Online Test

Sr. # Questions Answers Choice
1 Using a graded Index fibre, the time difference is reduced to about. 1 ns per km 33 ns per 100 km 33 ns per km 1 ns per 100 km
2 __ will travel faster than other through an optical fibre. Ultraviolet light Visible light Infrared light White light
3 Reapters are placed in new system at distance of. 30 km 50 km 80 km 100 km
4 The light emitted from light emitting diode has wave length. 1.1 micro meter 1.3 micro meter 1.5 micro meter 1.7 micro meter
5 The light signal in Opticla fiber must be regenerated by advice called. Regenerator Generator Repeater Diode
6 Multimode graded index fibre has a core whose diameter range lie from. 5 to 50 micro meter 50 to 100 micro meter 40 to 1000 micro meter 50 to 10,000 micrometer
7 Multimode step index fiber is useful for. Long distance Sort distance Very long distance Infinite distance
8 The optical fiber is covered for protection by a Glass Jacket Plastic Jacket Copper Jacket Aluminum Jacket
9 Critical angle is that angle of incident ofr which angle of refraction is. 90 <sup>o</sup> 45 <sup>o</sup> 42 <sup>o</sup> 24 <sup>o</sup>
10 A layer over the central core of the jacke is called. Jacket Plastic Cladding Rubber
11 Information carrying capacity of optical fibre called. Capacity Band width Immunity Ability
12 Critical angle is that incident angle in denser medium for which angle of refraction is. 0 <sup>o</sup> 45 <sup>o</sup> 90 <sup>o</sup> 120 <sup>o</sup>
13 The first person who attempted to measure the speed of light was. Michelson Hygen's Galileo Ability
14 The Detector in Photo phone is made up of. Cadmium Germanium Selenium Silicon
15 In Michelson's experiment the relation used to find the speed of light is 16 fc 1/16 fd 16 fd 16/fd
16 Which is not the essential component of a spectrometer. Collimator Telescope Turntable Microscope
17 For normal adjustment what is the length of astronomical telescope if focal lengths of astronomical telescope if focal lengths of objective and eye piece are 100 cm 20 cm respectively. 10 cm 20 cm 5 cm 120 cm
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