What is dispersion of light?
a) The bending of light
b) The splitting of light into its constituent colors
c) The reflection of light
d) The absorption of light
What is the primary cause of dispersion in a prism?
a) Reflection
b) Diffraction
c) The variation of the refractive index with wavelength
d) Interference
Which color of light bends the most when passing through a prism?
a) Red
b) Green
c) Blue
d) Violet
What is the angle of deviation in a prism?
a) The angle between the incident ray and the emergent ray
b) The angle between the refracted ray and the prism axis
c) The angle between the incident ray and the normal
d) The angle between the prism faces
What is the effect of increasing the angle of incidence on the angle of deviation in a prism?
a) The angle of deviation decreases
b) The angle of deviation increases
c) The angle of deviation remains constant
d) The angle of deviation becomes zero
Which of the following is a property of a material with high dispersion?
a) It has a high refractive index for all wavelengths of light
b) It causes light to spread out more
c) It absorbs more light
d) It has a low refractive index for all wavelengths of light
The phenomenon of dispersion is responsible for which of the following?
a) Formation of rainbows
b) The bending of light in water
c) The total internal reflection
d) The formation of optical illusions
What is the main use of a prism in a spectrometer?
a) To focus light
b) To split light into its constituent colors
c) To reflect light onto a screen
d) To amplify light
Which color of light has the shortest wavelength in the visible spectrum?
a) Red
b) Yellow
c) Green
d) Violet
What is the angle of minimum deviation in a prism?
a) The angle at which the incident light is perpendicular to the surface
b) The angle at which the light passes through the prism without bending
c) The angle at which light is refracted the most
d) The angle at which the angle of deviation is the smallest
In a prism, which of the following factors increases the dispersion of light?
a) Decrease in the refractive index
b) Decrease in the angle of incidence
c) Increase in the refractive index
d) Increase in the angle of emergence
Which of the following is true about the dispersion of light in a glass prism?
a) All colors are refracted by the same amount
b) Violet light is refracted less than red light
c) The refractive index increases with the decrease in wavelength
d) Dispersion decreases as the angle of incidence increases
What is a rainbow formed by?
a) Reflection of sunlight on water droplets
b) Diffraction of light through clouds
c) Dispersion of sunlight through water droplets
d) Interference of light waves in the atmosphere
What is the phenomenon called when white light is passed through a prism?
a) Diffraction
b) Polarization
c) Dispersion
d) Refraction
Which of the following materials is commonly used in prisms?
a) Air
b) Water
c) Glass
d) Plastic
How does the refractive index of a prism change with wavelength?
a) It remains constant for all wavelengths
b) It decreases for longer wavelengths
c) It increases for shorter wavelengths
d) It increases for longer wavelengths
What does a prism do to the different colors of light?
a) Reflects them
b) Absorbs them
c) Splits them and bends them by different amounts
d) Transmits them all equally
What is the role of the refractive index in the dispersion of light through a prism?
a) A higher refractive index leads to greater dispersion
b) A lower refractive index leads to greater dispersion
c) The refractive index does not affect dispersion
d) Dispersion occurs only when the refractive index is constant
Which of the following is an effect of dispersion in a prism?
a) Creation of a spectrum of light
b) Absorption of light by the prism
c) Reflection of light from the prism surface
d) Destruction of light rays
How does a prism create a spectrum of light?
a) By reflecting the light
b) By refracting and dispersing light into different wavelengths
c) By absorbing different wavelengths
d) By focusing all wavelengths to a single point
Which of the following colors of light refracts the least in a prism?
a) Red
b) Orange
c) Green
d) Violet
Which of the following best describes the nature of the light after passing through a prism?
a) The light is absorbed
b) The light is refracted but not dispersed
c) The light is dispersed into its constituent colors
d) The light loses its intensity
What does the dispersion of light depend on when passing through a prism?
a) The angle of the prism
b) The intensity of the light
c) The wavelength of the light
d) The color of the light
How can you increase the angle of deviation in a prism?
a) Decrease the refractive index of the prism material
b) Increase the angle of incidence
c) Decrease the wavelength of light
d) Both b and c
In a dispersion experiment using a prism, which of the following colors will have the largest angle of deviation?
a) Red
b) Green
c) Blue
d) Violet
What is the condition for the minimum angle of deviation in a prism?
a) When the angle of incidence equals the angle of refraction
b) When the light passes through the prism without bending
c) When the incident light is perpendicular to the prism surface
d) When the refracted light exits symmetrically
Which of the following explains the formation of the spectrum in a rainbow?
a) Diffraction
b) Reflection
c) Dispersion
d) Polarization
What effect does the thickness of the prism have on the dispersion of light?
a) A thicker prism causes more dispersion
b) A thinner prism causes more dispersion
c) The thickness of the prism does not affect dispersion
d) The thickness of the prism determines the wavelength of light emitted
