Physics Fsc Part 1 Chapter 10 Online Test With Answers

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Physics Fsc Part 1 Chapter 10 Online Test

Sr. # Questions Answers Choice
1 The optical fibre is covered for protection by Glass jacket Plastic jacket Steel jacket Diamond jacket
2 A double convex lens acts as diverging lens when the object is At infinity Inside the focus A way from focus A a large distance from lens
3 Multimode step index fibre is useful for Long distances Short distances Better quality Low price
4 The types of optical fibres are Three Four Five Six
5 Total confined light is obtained by Total internal reflection Refraction of light Diffraction Polarization
6 The accepted value for speed of light in vacuum 2.99 x 10<sup>8</sup>m - sec<sup>-1</sup> 2.99 x 10<sup>6</sup>m - sec<sup>-1</sup> 2.99 x 10<sup>8</sup>km - sec<sup>-1</sup> 2.99 x 10<sup>8</sup>m - h<sup>-1</sup>
7 The speed of light was measured correctly by Galileo Michelson Newton Maxwell
8 The device used to study the spectra from different sources of light is Telescope Optical fibre Spectrometer Microscope
9 Image formed by a concave lens is Real Virtual Erect None of these
10 The focal length of a concave lens is always +ve -ve Zero None of these
11 The diameter of a lens is called Focal length Aperture Principle axis Centre
12 More details of an object can be seen with a microscope by using Green light Red light Yellow light Blue light
13 A convex lens can be used as Simple microscope Compound microscope Telescope Spectrometer
14 The magnifying power is also called Resolving power Angular magnification Strength of eye None of these
15 The ratio of size of image and size of object is Focal length Magnification Resolving power Principle focus
16 The location of near point changes with Age Size of the eye Sharpness of the eye None of these
17 The minimum distance from eye at which an object appears to be distinct is Near point Focal length Image distance from lens Object distance from lens
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