1st Year Fsc Physics Online Test With Answers

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1st Year Fsc Physics Online Test

Sr. # Questions Answers Choice
1 The blue colour of sky is due to diffraction Reflection Polarization Scattering
2 An oil film on water surface shows colour due to. Diffraction Interference Polarization Dispersion
3 The fringe spacing increases if we use. Yellow light Green lgiht Blue light Red light
4 According to Hygen's principle, each point on a wave front acts as a source of. Secondary wavelet New wave front Sound Primary wavelet
5 Hygen's principle is used for. Explain polarization Locate the wave front Find the speed of light Find the index of refraction
6 A ray of light shows the direction of propagation of light It is line which is. Normal to the wave front Parallax to the wave front Opposite to the wave front Equal to the wave front
7 the locus of all pint in the same wave of vibration is called. Wave front Diffraction Interference Polarization
8 In case of point source the shape of wave front is. Plane spherical Circular Eliptical
9 Angle between ray of light and wave front is 0 <sup>o</sup> 60 <sup>o</sup> 90 <sup>o</sup> 120 <sup>o</sup>
10 The light energy travels in space as waves was firstly proposed by Maxwell Young Einsten Hydrogen
11 Soap film is sunlight appears coloured due to. Dispersion of light Diffraction of light Scattering of light Interference fo light
12 A bat finding its correct location by sending Matter waves Ultrasonic waves Infrasonic waves electromagnetic waves
13 The state of human blood flow can be found by using. Newton's formula of speed of sound Interference of sound Phenomena of beats Doppler's effect of sound
14 The waves used in radar speed trap are <u>Longitudinal</u> Sound wave Micro waves Matter waves
15 The speed of stars and galaxies can be calculated by Compton effect Stefan's law Doppler's effect Pascal's law
16 Radar system is an application of. Chemical effect Electric effect Magnetic effect Doppler's effect
17 Star moving towards the earth show Red shift Blue shift Green shift Yellow shift
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