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Physics
Identify the following kind of beam of light.
Chapter: [6] Light
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Identify the following kind of beam of light.
Chapter: [6] Light
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Name the substance through which light is made to pass.
Chapter: [6] Light
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Can you hear the sound produced due to the vibrations of second's pendulum?
Chapter: [7] Sound
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What is meant by rectilinear propagation of light?
Chapter: [6] Light
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What is the difference between a ray of light and a beam of light?
Chapter: [6] Light
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Out of the following, choose the substance which is translucent medium:
Chapter: [6] Light
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Give two common observations illustrating that light travels in a straight-line path.
Chapter: [6] Light
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What is the cause of regular reflection?
Chapter: [6] Light
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What cause sound? Why do we require a material medium for the transmission of sound?
Chapter: [7] Sound
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What is the effect of temperature and pressure on the speed of sound in a gas?
Chapter: [7] Sound
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What is sound? Explain with example how does sound travel in a medium.
Chapter: [7] Sound
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What is meant by rectilinear propagation of light?
Chapter: [6] Light
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The smoke from the gun barrel is seen 2 second before the explosion is heard. If the speed of sound in air is 350 ms-1, calculate the distance of observer from the gun.
Chapter: [7] Sound
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Name the principle employed in a periscope.
Chapter: [6] Light
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What do you mean by the point of incidence?
Chapter: [6] Light
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The sound of which of the following frequency is audible to us?
2 Hz, 1000 Hz, 200 kHz, 8 MHz
Chapter: [7] Sound
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The angle between the incident ray and the normal to the surface at the point of incidence is called the angle of incidence.
Chapter: [6] Light
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