Transmission of Light
Physics ⇒ Light and Optics
Transmission of Light starts at 8 and continues till grade 12.
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See sample questions for grade 10
A beam of light passes through a glass slab and emerges parallel to its original path. What phenomenon does this illustrate?
A student observes that a red filter only allows red light to pass through. What property of the filter is responsible for this?
Describe how the thickness of a material affects the amount of light transmitted through it.
Describe how the transmission of light is important in the functioning of optical fibers.
A glass block has a refractive index of 1.6. If the speed of light in vacuum is 3.00 × 10^8 m/s, what is the speed of light in the glass block?
A ray of light passes from air (n=1.0) into water (n=1.33) at an angle of 30° to the normal. Calculate the angle of refraction in water (to the nearest degree).
A student measures the intensity of light before and after it passes through a filter. If the initial intensity is 100 units and the transmitted intensity is 60 units, what is the transmittance of the filter?
A student observes that a red filter only allows red light to pass through. What property of the filter is responsible for this?
A student shines a flashlight through a piece of paper and observes that only a faint glow is visible on the other side. What type of material is the paper? (1) Transparent (2) Translucent (3) Opaque (4) Reflective
A student shines a laser through a solution and observes that the beam is visible from the side. What does this indicate about the solution? (1) It is transparent (2) It is translucent (3) It is opaque (4) It is a colloid
Which law explains the relationship between the angle of incidence and the angle of refraction? (1) Newton's Law (2) Snell's Law (3) Ohm's Law (4) Boyle's Law
Which of the following best describes the transmission of light through a vacuum? (1) No transmission (2) Partial transmission (3) Complete transmission without absorption or scattering (4) Transmission with absorption only
Fill in the blank: The __________ angle is the angle at which light passes from a denser to a rarer medium and refracts at 90° to the normal.
Fill in the blank: The __________ effect is the scattering of light by particles in a colloid or in very fine suspension.
Fill in the blank: The __________ of a material determines how much it slows down light passing through it.
Fill in the blank: The amount of light transmitted through a material is called its __________.
True or False: All transparent materials have the same refractive index.
True or False: Light can be transmitted, reflected, or absorbed when it strikes a material.
True or False: Light travels faster in water than in air.
True or False: Opaque materials do not transmit any light.
