Rectilinear Propagation of Light
Physics ⇒ Light and Optics
Rectilinear Propagation of Light starts at 7 and continues till grade 12.
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See sample questions for grade 9
Describe an experiment to show that light travels in straight lines.
Describe how a pinhole camera works based on the rectilinear propagation of light.
Describe how the rectilinear propagation of light helps in the working of a laser pointer.
Explain why shadows are formed when an opaque object is placed in the path of light.
Explain why the shadow of a tree appears longer in the early morning and late afternoon.
Explain why we cannot see around corners if light travels in straight lines.
If a light source, an opaque object, and a screen are aligned in a straight line, what will be observed on the screen?
If a small object is placed very close to a point source of light, what type of shadow is formed?
If the distance between an object and a screen is increased, what happens to the size of the shadow?
If three cards with holes are placed in a straight line and a light source is placed behind them, what will happen if the holes are not aligned?
If you place a card with a small hole between a candle and a wall, what will you observe on the wall?
State the law of rectilinear propagation of light.
What is meant by the rectilinear propagation of light?
What is the difference between umbra and penumbra?
Why does a shadow become larger when the object is moved closer to the light source?
