1st Year Fsc Physics Online Test With Answers

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1st Year Fsc Physics Online Test

Sr. # Questions Answers Choice
1 A constant temperature, if pressure of a given mass of gas is halved, then its volume becomes. Halve Doubled Four time Constant
2 S.I Unit of pressure of gas is. Nm N.m N2/m N3m
3 The SI unit of product of pressure and volume is. <sub>Watt</sub> Joule Pascal Newton
4 The ideal gas law is. PV =NVk P = NkT PV =nRT P=nRT
5 Heat is form of. Power Momentum Energy Torque
6 A device based upon the thermodynamics property of matter is called. Calorimeter Heat engine thermometer Voltmeter
7 Average translational K.E. of molecules for an ideal gas is given as 1/2 KT KT 2/3 KT 3/2 KT
8 For a gas obeying Boyle's Law, if the pressure is doubled, the volume becomes. Double Three fold One half Remains the same
9 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
10 __ will travel faster than other through an optical fibre. Ultraviolet light Visible light Infrared light White light
11 Reapters are placed in new system at distance of. 30 km 50 km 80 km 100 km
12 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
13 The light signal in Opticla fiber must be regenerated by advice called. Regenerator Generator Repeater Diode
14 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
15 Multimode step index fiber is useful for. Long distance Sort distance Very long distance Infinite distance
16 The optical fiber is covered for protection by a Glass Jacket Plastic Jacket Copper Jacket Aluminum Jacket
17 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>
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