Prisms
Physics ⇒ Light and Optics
Prisms starts at 9 and continues till grade 12.
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See sample questions for grade 11
Describe how the angle of deviation changes as the angle of incidence increases from zero to a high value.
Describe the difference between a right-angled prism and an equilateral prism.
Explain the phenomenon of dispersion as it occurs in a glass prism.
Explain why a prism produces a spectrum of colors when white light passes through it.
Explain why the deviation produced by a prism is different for red and violet light.
State one practical application of a right-angled prism in optical instruments.
State the formula for the angle of minimum deviation (D) for a prism in terms of the angle of the prism (A) and the refractive index (n).
A student observes that the deviation produced by a prism is 25° for a certain angle of incidence. If the angle of the prism is 40°, what is the sum of the angle of incidence and the angle of emergence?
If the refractive index of a prism is increased, the angle of deviation for a given angle of incidence will: (1) Increase (2) Decrease (3) Remain the same (4) Become zero
Which color of visible light is deviated the most when passing through a prism? (1) Red (2) Green (3) Blue (4) Violet
Which of the following is NOT a factor affecting the angle of deviation in a prism? (1) Wavelength of light (2) Angle of prism (3) Material of prism (4) Length of prism
Which of the following is NOT a type of prism? (1) Equilateral prism (2) Right-angled prism (3) Rectangular prism (4) Dispersive prism
Fill in the blank: The base of a prism is the side ________ to the refracting surfaces.
Fill in the blank: The deviation produced by a prism depends on the ________ of the prism and the refractive index of its material.
Fill in the blank: The process by which a prism splits white light into its component colors is called ________.
The angle between the two refracting surfaces of a prism is called the ________ of the prism.
True or False: A prism can separate white light into its constituent colors.
True or False: At the angle of minimum deviation, the path of light through the prism is symmetrical.
True or False: The emergent ray from a prism is always parallel to the incident ray.
True or False: The refractive index of a prism is independent of the wavelength of light used.
