Published 05 Mar, 2020

# 50 Important Physics Practice GK Questions Set 2

##### 1. The sound associated with the shock waves created whenever an object travelling through the air travels faster than the speed of sound is known as
A. Sonic Boom
B. Ultrasonic Sound
C. Sound Blast
D. Explosion
##### 2. Sound waves with larger amplitudes are
A. Loud
B. Soft
C. Shrill
D. Out of hearing range
A. Quality
B. Waveform
C. Amplitude
D. Frequency
A. Echo
B. Sonic Boom
C. Latency
D. Delay
A. Locomotion
B. Echomotion
C. Echolocation
D. Economic
A. Elephant
B. Bats
C. Monkeys
D. Dogs
##### 7. The branch of science that deals with the study of sound is called
A. Drumsticks
B. Mechanics
C. Acoustics
D. Thermodynamics
A. 343m
B. 100m
C. 17m
D. 50m
A. Air
B. Water
C. Vacuum
D. Wall
A. Frequency
B. Amplitude
C. Speed
D. Wavelength
A. Speaker
B. Microphone
C. Gramophone
##### 12. An increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move towards (or away from) each other is known as
A. Compton Effect
B. Casimir Effect
C. Accordion Effect
D. Dopler Effect
##### 13. How much long does a sound actually persist in our human brains?
A. 1/16th of a second
B. 1/100th of a second
C. 1/10th of a second
D. 5 Seconds
A. Loudspeaker
B. Microphone
C. Stethoscope
##### 15. Sounds with frequency lower than 20 Hz are called
A. Supersonic Sound
B. Infrasonic Sound
C. Ultra Sonic Sound
D. Megasonic Sound
A. Neutrons
B. Photons
C. Electrons
D. Protons
##### 17. Who established the wave nature of light?
A. Issac Newton
B. Louis De Broglie
C. Christian Huygens
D. Thomas Young
##### 18. Who verified and established the fact the light is an electromagnetic wave?
A. James Clerk Maxwell
B. Thomas Young
C. Albert Einstein
D. Issac Newton
##### 19. The Photo electric effect was first discovered by?
A. Louis De Broglie
B. Albert Einstein
C. Heinrich Rudolf Hertz
D. Thomas Young
##### 20. Who explained the photoelectric effect in terms of quantum mechanics, the idea that light exists as tiny packets, or particles, called photons?
A. Albert Einstein
B. Thomas Young
C. Erwin Schrodinger
D. James Maxwell
##### 21. How much time does it take for light to reach the Earth from the Sun?
A. 10 minutes
B. 60 minutes
C. 1 Minute
D. 8 minutes and 20 seconds
A. Reflection
B. Interference
C. Refraction
D. Diffraction
A. 3
B. 7
C. 10
D. 8
##### 24. The complete reflection of a light ray in the same medium when reaching an interface when the angle of incidence exceeds the critical angle is known as
A. Total Internal Reflection
B. Polarization
C. Diffraction
D. Interference
##### 25. The angle of incidence above which total internal reflection occurs is called as?
A. Critical Angle
B. Reflection Angle
C. Angle of Deviation
D. Emergent Angle
##### 26. Which natural phenomena is the reason for the sky to appear blue?
A. Interference of light
B. Scattering of light
C. Reflection of light
D. Refraction of light
A. Blue
B. White
C. Green
D. Black
##### 28. The phenomena that makes stars twinkle is?
A. Atmospheric Refraction
B. Total Internal Reflection
C. Reflection
D. Scattering
A. Air
B. Water
C. Diamond
D. Vacuum
##### 30. Which of the following types of lenses is our eye lens?
A. Convex lens with variable power
B. Concave lens with variable power
C. Cylindrical Lens
D. Lens with zero power
A. Eye lens
B. Retina
C. Cornia
D. Iris
A. Telescope
B. Periscope
C. Microscope
D. Kaliedoscope
A. Iris
B. Cornea
C. Pupil
D. Eyelens
A. Candela
B. Flux
C. Weber
D. Dioptre
##### 35. The property of a mirror to invert images sideways in a way that left appears to be right and vice versa is known as?
A. Lateral Inversion
B. Direction Inversion
C. Plain Reflection
D. Mirroring
A. 500m
B. 10 km
C. 200 km
D. Infinite
A. Glass Slab
B. Lens
C. Prism
D. Mirrors
A. +3 Dioptre
B. +4 Dioptre
C. -2 Dioptre
D. +10 Dioptre
##### 39. Which are the primary colors in photography?
A. Cyan Magenta Yellow Black
B. Black Blue Yellow
C. Red Green Blue
D. Green Red Purple
A. Red
B. Green
C. Blue
D. Violet
A. Convex Lens
B. Concave Lens
C. Plain glass
D. Fiber Glass
##### 42. The optical fiber is based on the phenomenon of?
A. Refraction
B. Diffraction
C. Total Internal Reflection
D. Polarization
##### 43. What happens to the speed of light when it passes through a medium of relatively higher refractive index?
A. Speed Increases
B. Speed Decreases
C. Remains Same
D. First increases then decreases
A. Glass
B. Vacuum
C. Diamond
D. Water
A. Microscope
B. Periscope
C. Telescope
D. Kaliedoscope
A. Red
B. Green
C. Yellow
D. Blue
A. Hypermetropia
B. Presbyopia
C. Astigmatism
D. Cataract
A. Myopia
B. Hypermetropia
C. Presbyopia
D. Astigmatism
##### 49. Which of the following lenses can be used to correct myopia?
A. Concave lens
B. Plain glass lens
C. Convex lens
D. Bifocal lens
##### 50. Which of the following lenses can be used to correct hypermetropia?
A. Convex Lens
B. Bifocal lens
C. Plain glass lens
D. Concave Lens

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