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Differentiate between the reflection of light from a plane mirror and that from a plane sheet of paper.
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A light ray is incident normally on a plane mirror. What is the direction of reflected ray? Show it on a diagram.
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A light ray is incident normally on a plane mirror. (a) What is its angle of incidence?
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Draw a diagram to show the reflection of a ray of light using a plane mirror. In the diagram, label the incident ray, the reflected ray, the normal, the angle of incidence and the angle of reflection.
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Figure shows an incident ray AO and the normal ON on a plane mirror. The angle which the incident ray AO makes with mirror is 30°. (a) Find the angle of incidence. (b) Draw the reflected ray and then find the angle between the incident and reflected rays.
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The diagram in Figure shows a point object P in front of a plane mirror MM1.
(a) Complete the diagram by taking two rays from the point P to show the formation of its image.
(b) In the diagram, mark the position of eye to see the image.
(c) Is the image formed real or virtual? Explain why?
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The diagram below in figure shows an object XY in front of a plane mirror MM1 . Draw on the diagram, path of two rays from each point X and Y of the object to show the formation of its image .
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A ray is incident on a plane mirror . Its reflected ray is perpandicular to the incident ray . Find the angle of incidence .
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What type of mirror is used to obtain a real image-of an object?
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Complete the following sentence :
Sound is produced by a ___________ body.
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What is a transverse wave? In which medium: solid, liquid or gas, can it be produced?
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Explain meaning of the terms compression and rarefaction in relation to a longitudinal wave.
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Define the term amplitude of a wave. Write its S.I. unit.
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What do you mean by the term frequency of a wave? State its S.I. unit.
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Define the term wave velocity. Write its S.I. unit.
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Draw displacement-time graph of a wave and show on it the amplitude and time period of wave.
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Draw a displacement-distance graph of a wave and mark on it, the amplitude of wave by the letter 'a' and wavelength of wave by the letter λ.
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How are the wave velocity V, frequency f and wavelength λ of a wave related? Derive the relationship.
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