Prisms
Physics ⇒ Light and Optics
Prisms starts at 9 and continues till grade 12.
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See sample questions for grade 10
Describe how a prism is used in a spectrometer.
Describe the difference between a dispersive prism and a reflecting prism.
Describe the path of a monochromatic light ray through a triangular prism.
Explain why a prism disperses white light but a rectangular glass slab does not.
Explain why the deviation produced by a prism increases with the refractive index of the material.
A ray of light passes through a prism and emerges at an angle of 70° to the original direction. If the angle of the prism is 40°, what is the angle of deviation?
A student shines a beam of white light into a glass prism and observes a spectrum on the wall. Which property of the prism is responsible for this observation? (1) Reflection (2) Refraction (3) Absorption (4) Diffraction
A student observes that the spectrum produced by a prism is wider for blue light than for red light. Explain the reason for this observation.
A student shines a beam of white light into a glass prism and observes a spectrum on the wall. Which property of the prism is responsible for this observation? (1) Reflection (2) Refraction (3) Absorption (4) Diffraction
Which color of light has the least deviation when passing through a prism? (1) Red (2) Orange (3) Green (4) Violet
Which color of visible light is deviated the most by a glass prism? (1) Red (2) Green (3) Blue (4) Violet
Which of the following is a correct statement about the emergent ray from a prism at minimum deviation? (1) It is parallel to the incident ray. (2) It is perpendicular to the incident ray. (3) It makes the same angle with the base as the incident ray. (4) It is undeviated.
A ray of light passes through a prism and emerges on the other side. The angle between the incident ray and the emergent ray is called the _______.
Fill in the blank: The angle of deviation is minimum when the light passes through the prism symmetrically, i.e., the angle of incidence is _______ to the angle of emergence.
Fill in the blank: The base of a prism is the side opposite to the _______.
Fill in the blank: The deviation produced by a prism depends on the _______ of the prism and the refractive index of its material.
True or False: A prism can separate white light into its constituent colors.
True or False: The angle of deviation increases as the angle of incidence increases beyond the angle of minimum deviation.
True or False: The angle of deviation is the same for all colors of light passing through a prism.
True or False: The emergent ray from a prism is always bent towards the base of the prism.
