19th Chapter

FSC Part 2 Physics Chapter 19 Online Test MCQ's

Second Year Physics Chapter 19 Online MCQ Test for 2nd Year Physics Chapter 19 Dawn of Modern Physics Preparation

FSC Part 2 Physics
Chapter 19 Test

Start Chapter 19 Test

Second Year Physics Chapter 19 Online MCQ Test for 2nd Year Physics Chapter 19 Dawn of Modern Physics Preparation

Sr. # Questions Answers Choice
1 In an nihilation emitted photons moves in opposite directions to conserve.
  • A. Mass
  • B. Charge
  • C. Energy
  • D. Momentum
2 The special theory of relativity based on.
  • A. One postulate
  • B. Two postulates
  • C. Three postulates
  • D. Four postulates
3 The value of Stefan is constant is:
  • A. 4.57 x 10<sup>-8</sup> m<sup>2</sup>k<sup>2</sup>
  • B. 5.67 x10<sup>-8</sup> wm<sup>-2</sup>k<sup>-4</sup>
  • C. 6.67x 10<sup>-11</sup> wm<sup>2</sup>k<sup>4</sup>
  • D. 7.45 x &nbsp;10<sup>-9</sup> m<sup>2</sup> wk<sup>3</sup>
4 Using relativistic effects the location of an air craft after an hour fight can be predicated about
  • A. 20 m
  • B. 50 m
  • C. 760 m
  • D. 780 m
5 Earth orbital speed is.
  • A. 10 km/s
  • B. 20 km/s
  • C. 30 km/s
  • D. 40 km/s
6 Pair production cannto take place in vacuum because :
  • A. Mass in not conserved
  • B. Momentum is not conserved
  • C. Energy is not conserved
  • D. Charge is not conserved
7 Disintegration of photon on striking a nucleus into an electron and positron is known as.
  • A. Annihilation of matter
  • B. Compton effect
  • C. Pair production
  • D. Photo electric effect
8 The energy of photon is givne by
  • A. mv2/2
  • B. hf
  • C. Va e
  • D. mac<sup>1</sup>
9 Photodiode is used for wave nature of.
  • A. Light
  • B. Thermal radiation
  • C. Radi waves
  • D. Sound waves
10 The unit for Plank's constant is:
  • A. Js<sup>-1</sup>
  • B. Jm
  • C. Js&nbsp;
  • D. Jm<sup>2</sup>

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  • S

    Sajal

    09 Dec 2017

    Helpful

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    Intikhab

    11 Aug 2017

    10/17

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    Tayyab

    30 Apr 2016

    good and very helpful for exam preparation

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