PPSC Physics Full Book With Answers

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PPSC Physics Full Book

Sr. # Questions Answers Choice
1 Infrared radiation is also known as Radio signals Heat radiation Magnetic resonance waves RADAR
2 Which form of electromagnetic radiation is used in RADAR. Long wavelength ultraviolet waves short wavelength microwaves short wavelength infrared wave Long wavelength radiowaves
3 Which of the following form of electromagnetic energy has the highest frequency. X rays Game rays Ultraviolet waves Infrared waves
4 Which of the following forms of electromagnetic energy has the longest wavelength. Microwaves Radio waves Infrared waves <sup>Visible light</sup>
5 Which of the following is not electromagnetic . x-rays Gama rays Cathood rays Infrared rays
6 Electromagnetic waves are produced by Charge at rest Accelerated changes Heating a conductor Electroplating
7 Which of the following is electromagnetic wave. X rays Micro waves Light All of these
8 Electromagnetic waves transmit. Energy only Momentum only Energy and momentum Light
9 A application of the phenomenon of polarization is in The scattering of light beams Explaining the blue colour of sky Identifying chemicals elements Analysis of mechanical stress
10 The polarization of an electromagnetic wave is determined by The magnetic field The electric field The electric and magnetic fields The field direction of propagation of electromagnetic waves
11 The phenomenon of interference occurs because waves obey Laws of reflection Principle of super position Laws of motion Inverse square law of intensities
12 Diffraction is a special type of. Polarization Interference Dispersion Scattering
13 Two light waves which are not coherent cannot produce. Interference Diffraction Reflection Dispersion
14 Which one of the following cannot be polarized. Radiowave Ultraviolet rays X- rays Sound waves
15 Light of passing through a polaroid is Plane polarized Unpolarized Circularly polarized Elliptically polarized
16 Polarization of light shows that light is. Corpuscular in nature Of extremely short waves Longitudinal waves Transverse waves
17 We get light inside a room in a day time due to Interferences Polarization Diffraction Refraction
18 Michelson's interferometer can b e sued to find Velocity of light Velocity of sound Wavelength of light Wavelength of sound
19 Newton's rings are formed due to Diffraction of light Interference of light Polarization of light Reflection of light
20 Blue colour of sky is due to. Diffraction Reflection Polarization Scattering
21 Fringe spacing in double slit experiment can be increased by decreasing. Wavelength of light Width of slits Slite separation Distance between the slits and screen
22 The appearance of colures in their film is due to Diffraction Dispersion Interference Polarization
23 A thin layer of oil the surface of water looks coloured due to. Pillarization of light Different elements present in the oil Interference of light Transmission of light
24 Soap film in sunlight appears coloured due to Dispersion of light Diffraction of light Scattering of light Interference of light
25 Interference fringe spacing depends on The wavelength of light used The distance screen from the coherent sources Separation between the sources All of the above
26 The distance between any two consecutive bright or dark fringes is called. Wavelength Amplitude Fringe spacing Wavelet
27 Which of the following is nearly monochromatic light. Light from fluorescent tube Light from neon lamp Light from sodium lamp Light from simple lamp
28 Hygen's principle states that Light travels in straight line Light travels in electromagetic waves All points of primary wave front are source of secondary wavelets Light has dual nature
29 The locus of all points in a medium having the same phase of vibration is called. Creast trough Wavelength Wave front
30 Which of the following proves that light waves are transverse in nature. Diffraction Interference Polarization Refraction
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