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 8
A student places a book in front of a torch and observes a shadow on the wall. Which property of light is being demonstrated?
A torch is shone through three holes in three cardboards placed in a straight line. If the middle cardboard is slightly moved, what will happen to the light seen through the last hole?
Describe how the rectilinear propagation of light helps in the formation of a lunar eclipse.
Describe how the size of a shadow changes when the distance between the object and the light source increases.
Describe what happens to the path of light when it passes from air into water at an angle.
A student places a book in front of a torch and observes a shadow on the wall. Which property of light is being demonstrated?
A torch is shone through three holes in three cardboards placed in a straight line. If the middle cardboard is slightly moved, what will happen to the light seen through the last hole?
If three cardboards with holes in the center are placed in a straight line and a light source is placed behind them, what will you observe if you look through the holes?
Which device uses the principle of rectilinear propagation of light to form an inverted image of an object?
(1) Microscope
(2) Pinhole camera
(3) Telescope
(4) Periscope
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 correct statement about the path of light?
(1) Light always bends around obstacles
(2) Light travels in a straight line unless it passes through different media
(3) Light can never be blocked
(4) Light travels in a circle
Which of the following is necessary for the formation of a shadow?
(1) Opaque object
(2) Transparent object
(3) Both (1) and (2)
(4) None of the above
Fill in the blank: The concept of rectilinear propagation of light is valid only in a ________ medium.
Fill in the blank: The dark, central part of a shadow is called the ________.
Fill in the blank: The principle of rectilinear propagation of light is used in the working of a ________ camera.
Fill in the blank: The region where no light reaches behind an opaque object is called the ________.
True or False: Light can bend around obstacles without any change in direction.
True or False: Light can pass through opaque objects.
True or False: The formation of a solar eclipse is an example of rectilinear propagation of light.
True or False: The rectilinear propagation of light can be observed using a laser pointer and smoke.
