Rectilinear Propagation of Light
Physics ⇒ Light and Optics
Rectilinear Propagation of Light starts at 7 and continues till grade 12.
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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 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?
Light cannot travel through which of the following?
(1) Air
(2) Water
(3) Wood
(4) Glass
Which experiment can be used to demonstrate the rectilinear propagation of light?
(1) Using a glass slab
(2) Using a pinhole camera
(3) Using a prism
(4) Using a convex lens
Which of the following best demonstrates the rectilinear propagation of light?
(1) Formation of shadows
(2) Reflection from a mirror
(3) Refraction through a lens
(4) Dispersion through a prism
Which of the following is a consequence of rectilinear propagation of light?
(1) Reflection
(2) Refraction
(3) Formation of shadows
(4) Diffraction
Fill in the blank: The property of light to travel in straight lines is called _______.
Fill in the blank: The region of partial shadow formed when only a part of the light is blocked is called _______.
Fill in the blank: The region where light is completely blocked by an opaque object is called the _______.
Fill in the blank: The straight path along which light travels is called a _______.
True or False: Light can bend around obstacles in a straight line.
True or False: The formation of a sharp shadow proves that light travels in straight lines.
True or False: The rectilinear propagation of light can be observed only in a vacuum.
True or False: The rectilinear propagation of light is observed only in solids.
