The bending of light waves as they pass from one medium to another is known as:
a) Diffraction
b) Reflection
c) Refraction
d) Dispersion
Answer: c) Refraction
Which of the following colors has the longest wavelength?
a) Blue
b) Green
c) Yellow
d) Red
Answer: d) Red
When light passes through a prism, it separates into different colors. This phenomenon is called:
a) Reflection
b) Dispersion
c) Refraction
d) Scattering
Answer: b) Dispersion
The angle of incidence is equal to the angle of reflection. This statement is known as:
a) Huygens’ principle
b) Snell’s law
c) Fermat’s principle
d) Law of reflection
Answer: d) Law of reflection
The speed of light in a vacuum is approximately:
a) 3 × 10^5 km/s
b) 3 × 10^6 km/s
c) 3 × 10^7 km/s
d) 3 × 10^8 km/s
Answer: d) 3 × 10^8 km/s
When light travels from a rarer medium to a denser medium, it:
a) Bends away from the normal
b) Bends towards the normal
c) Does not bend
d) Reflects completely
Answer: b) Bends towards the normal
The phenomenon of splitting white light into its component colors is known as:
a) Scattering
b) Diffraction
c) Interference
d) Dispersion
Answer: d) Dispersion
The image formed by a convex lens is:
a) Real, inverted, and diminished
b) Real, inverted, and magnified
c) Virtual, upright, and diminished
d) Virtual, upright, and magnified
Answer: a) Real, inverted, and diminished
The focal length of a converging lens is:
a) Positive
b) Negative
c) Zero
d) Depends on the material of the lens
Answer: a) Positive
The primary colors of light are:
a) Red, green, and blue
b) Cyan, magenta, and yellow
c) Red, yellow, and blue
d) Cyan, yellow, and magenta
Answer: a) Red, green, and blue
The phenomenon of bending of light waves around obstacles is called:
a) Diffraction
b) Dispersion
c) Refraction
d) Polarization
Answer: a) Diffraction
The unit of power of a lens is:
a) Diopter
b) Watt
c) Ampere
d) Coulomb
Answer: a) Diopter
The critical angle is defined as the angle of incidence when light:
a) Reflects completely
b) Refracts completely
c) Scatters
d) Absorbs
Answer: b) Refracts completely
When an object is placed at the center of curvature of a concave mirror, the image formed is:
a) Real, inverted, and magnified
b) Real, upright, and diminished
c) Virtual, upright, and magnified
d) Virtual, inverted, and diminished
Answer: a) Real, inverted, and magnified
The total internal reflection of light occurs when light travels from a medium of:
a) Lower refractive index to a medium of higher refractive index
b) Higher refractive index to a medium of lower refractive index
c) Same refractive index to a medium of different refractive index
d) Variable refractive index to a medium of constant refractive index
Answer: a) Lower refractive index to a medium of higher refractive index
In a camera, the aperture controls the:
a) Focal length
b) Exposure time
c) Amount of light entering the camera
d) Depth of field
Answer: c) Amount of light entering the camera
The splitting of white light into its component colors by a prism is an example of:
a) Dispersion
b) Reflection
c) Interference
d) Polarization
Answer: a) Dispersion
The lens formula is given by:
a) 1/f = 1/v – 1/u
b) 1/f = 1/u – 1/v
c) f = u + v
d) f = u – v
Answer: b) 1/f = 1/u – 1/v
The ability of a lens to focus parallel rays of light to a point is called its:
a) Power
b) Focal length
c) Aperture
d) Magnification
Answer: b) Focal length
The process by which light is absorbed and re-emitted in different directions by molecules in a medium is called:
a) Scattering
b) Diffraction
c) Refraction
d) Reflection
Answer: a) Scattering
The phenomenon of bending of light waves around small obstacles or edges is called:
a) Diffraction
b) Dispersion
c) Interference
d) Polarization
Answer: a) Diffraction
The range of visible light in the electromagnetic spectrum is approximately:
a) 400 nm to 700 nm
b) 200 nm to 600 nm
c) 500 nm to 1000 nm
d) 800 nm to 1500 nm
Answer: a) 400 nm to 700 nm
The lens in the human eye changes its shape to focus on objects at different distances. This process is known as:
a) Accommodation
b) Reflection
c) Refraction
d) Scattering
Answer: a) Accommodation
The phenomenon of light changing direction as it passes from one medium to another is known as:
a) Diffraction
b) Dispersion
c) Refraction
d) Scattering
Answer: c) Refraction
The angle of deviation of light passing through a prism depends on:
a) The angle of incidence
b) The angle of reflection
c) The refractive index of the prism
d) The color of the incident light
Answer: c) The refractive index of the prism
The image formed by a concave mirror is always:
a) Real and inverted
b) Virtual and inverted
c) Real and upright
d) Virtual and upright
Answer: a) Real and inverted
The angle of incidence for which the angle of refraction is 90 degrees is known as the:
a) Critical angle
b) Brewster’s angle
c) Polarizing angle
d) Total internal reflection angle
Answer: a) Critical angle
The color of an object that reflects all wavelengths of light is:
a) Red
b) Green
c) Blue
d) White
Answer: d) White
The phenomenon of bending of light waves around obstacles is more pronounced when the size of the obstacle is:
a) Larger
b) Smaller
c) It does not depend on the size of the obstacle
d) It depends on the color of the light
Answer: b) Smaller
The process of combining two or more light waves to form a single wave with a new amplitude and phase is called:
a) Diffraction
b) Dispersion
c) Refraction
d) Interference
Answer: d) Interference
The image formed by a plane mirror is always:
a) Real and inverted
b) Virtual and inverted
c) Real and upright
d) Virtual and upright
Answer: d) Virtual and upright
The bending of light waves as they pass through a small opening or around an edge is known as:
a) Diffraction
b) Dispersion
c) Refraction
d) Reflection
Answer: a) Diffraction
The ability of a lens to magnify an object is called its:
a) Power
b) Focal length
c) Aperture
d) Magnification
Answer: d) Magnification
The speed of light is slower in:
a) Vacuum
b) Air
c) Water
d) Glass
Answer: d) Glass
The primary pigment colors are:
a) Red, green, and blue
b) Cyan, magenta, and yellow
c) Red, yellow, and blue
d) Cyan, yellow, and magenta
Answer: b) Cyan, magenta, and yellow
The lens used to correct nearsightedness is:
a) Convex lens
b) Concave lens
c) Biconvex lens
d) Plano-concave lens
Answer: b) Concave lens
The phenomenon of bending of light waves around small obstacles or edges is more pronounced when the wavelength of light is:
a) Longer
b) Shorter
c) It does not depend on the wavelength of light
d) It depends on the intensity of light
Answer: a) Longer
The lens used to correct farsightedness is:
a) Convex lens
b) Concave lens
c) Biconvex lens
d) Plano-concave lens
Answer: a) Convex lens
The angle of incidence for which the angle of refraction is 0 degrees is known as the:
a) Critical angle
b) Brewster’s angle
c) Polarizing angle
d) Total internal reflection angle
Answer: b) Brewster’s angle
The distance between the center of curvature and the focus of a concave mirror is:
a) Equal to the radius of curvature
b) Less than the radius of curvature
c) Greater than the radius of curvature
d) It depends on the size of the mirror
Answer: b) Less than the radius of curvature
The phenomenon of bending of light waves around small obstacles or edges is most noticeable when the size of the obstacle or edge is comparable to the:
a) Wavelength of light
b) Frequency of light
c) Speed of light
d) Intensity of light
Answer: a) Wavelength of light
The color of an object that absorbs all wavelengths of light is:
a) Red
b) Green
c) Blue
d) Black
Answer: d) Black
The ability of a lens to spread out parallel rays of light is called its:
a) Power
b) Focal length
c) Aperture
d) Magnification
Answer: c) Aperture
The bending of light waves as they pass from one medium to another with different refractive indices is due to a change in the:
a) Frequency of light
b) Speed of light
c) Wavelength of light
d) Direction of light
Answer: b) Speed of light
The ability of a material to allow light to pass through it without significant scattering or absorption is called:
a) Transparency
b) Opacity
c) Diffraction
d) Reflection
Answer: a) Transparency
The image formed by a convex mirror is always:
a) Real and inverted
b) Virtual and inverted
c) Real and upright
d) Virtual and upright
Answer: d) Virtual and upright
The lens used in a microscope to magnify the image of the specimen is a:
a) Convex lens
b) Concave lens
c) Biconvex lens
d) Plano-concave lens
Answer: a) Convex lens
The phenomenon of bending of light waves around small obstacles or edges is more pronounced when the wavelength of light is:
a) Longer
b) Shorter
c) It does not depend on the wavelength of light
d) It depends on the intensity of light
Answer: a) Longer
The process by which light waves are reflected or absorbed by the surface of an object is called:
a) Diffraction
b) Dispersion
c) Refraction
d) Scattering
Answer: d) Scattering
The distance between the lens and the image formed by a lens is called the:
a) Object distance
b) Focal length
c) Image distance
d) Magnification
Answer: c) Image distance
The color of an object that reflects all wavelengths of light is:
a) Red
b) Green
c) Blue
d) White
Answer: d) White
The bending of light waves as they pass through a small opening or around an edge is known as:
a) Diffraction
b) Dispersion
c) Refraction
d) Reflection
Answer: a) Diffraction
The ability of a lens to magnify an object is called its:
a) Power
b) Focal length
c) Aperture
d) Magnification
Answer: d) Magnification
The speed of light is slower in:
a) Vacuum
b) Air
c) Water
d) Glass
Answer: d) Glass
The primary pigment colors are:
a) Red, green, and blue
b) Cyan, magenta, and yellow
c) Red, yellow, and blue
d) Cyan, yellow, and magenta
Answer: b) Cyan, magenta, and yellow
The lens used to correct nearsightedness is:
a) Convex lens
b) Concave lens
c) Biconvex lens
d) Plano-concave lens
Answer: b) Concave lens
The phenomenon of bending of light waves around small obstacles or edges is more pronounced when the wavelength of light is:
a) Longer
b) Shorter
c) It does not depend on the wavelength of light
d) It depends on the intensity of light
Answer: a) Longer
The lens used to correct farsightedness is:
a) Convex lens
b) Concave lens
c) Biconvex lens
d) Plano-concave lens
Answer: a) Convex lens
The angle of incidence for which the angle of refraction is 0 degrees is known as the:
a) Critical angle
b) Brewster’s angle
c) Polarizing angle
d) Total internal reflection angle
Answer: b) Brewster’s angle
The distance between the center of curvature and the focus of a concave mirror is:
a) Equal to the radius of curvature
b) Less than the radius of curvature
c) Greater than the radius of curvature
d) It depends on the size of the mirror
Answer: b) Less than the radius of curvature
The phenomenon of bending of light waves around small obstacles or edges is most noticeable when the size of the obstacle or edge is comparable to the:
a) Wavelength of light
b) Frequency of light
c) Speed of light
d) Intensity of light
Answer: a) Wavelength of light
The color of an object that absorbs all wavelengths of light is:
a) Red
b) Green
c) Blue
d) Black
Answer: d) Black
The ability of a lens to spread out parallel rays of light is called its:
a) Power
b) Focal length
c) Aperture
d) Magnification
Answer: c) Aperture
The bending of light waves as they pass from one medium to another with different refractive indices is due to a change in the:
a) Frequency of light
b) Speed of light
c) Wavelength of light
d) Direction of light
Answer: b) Speed of light
The ability of a material to allow light to pass through it without significant scattering or absorption is called:
a) Transparency
b) Opacity
c) Diffraction
d) Reflection
Answer: a) Transparency
The image formed by a convex mirror is always:
a) Real and inverted
b) Virtual and inverted
c) Real and upright
d) Virtual and upright
Answer: d) Virtual and upright
The lens used in a microscope to magnify the image of the specimen is a:
a) Convex lens
b) Concave lens
c) Biconvex lens
d) Plano-concave lens
Answer: a) Convex lens
The phenomenon of bending of light waves around small obstacles or edges is more pronounced when the wavelength of light is:
a) Longer
b) Shorter
c) It does not depend on the wavelength of light
d) It depends on the intensity of light
Answer: a) Longer
The process by which light waves are reflected or absorbed by the surface of an object is called:
a) Diffraction
b) Dispersion
c) Refraction
d) Scattering
Answer: d) Scattering
The distance between the lens and the image formed by a lens is called the:
a) Object distance
b) Focal length
c) Image distance
d) Magnification
Answer: c) Image distance
The color of an object that reflects all wavelengths of light is:
a) Red
b) Green
c) Blue
d) White
Answer: d) White
The bending of light waves as they pass through a small opening or around an edge is known as:
a) Diffraction
b) Dispersion
c) Refraction
d) Reflection
Answer: a) Diffraction
The ability of a lens to magnify an object is called its:
a) Power
b) Focal length
c) Aperture
d) Magnification
Answer: d) Magnification
The speed of light is slower in:
a) Vacuum
b) Air
c) Water
d) Glass
Answer: d) Glass
The primary pigment colors are:
a) Red, green, and blue
b) Cyan, magenta, and yellow
c) Red, yellow, and blue
d) Cyan, yellow, and magenta
Answer: b) Cyan, magenta, and yellow
The lens used to correct nearsightedness is:
a) Convex lens
b) Concave lens
c) Biconvex lens
d) Plano-concave lens
Answer: b) Concave lens
The phenomenon of bending of light waves around small obstacles or edges is more pronounced when the wavelength of light is:
a) Longer
b) Shorter
c) It does not depend on the wavelength of light
d) It depends on the intensity of light
Answer: a) Longer
The lens used to correct farsightedness is:
a) Convex lens
b) Concave lens
c) Biconvex lens
d) Plano-concave lens
Answer: a) Convex lens
The angle of incidence for which the angle of refraction is 0 degrees is known as the:
a) Critical angle
b) Brewster’s angle
c) Polarizing angle
d) Total internal reflection angle
Answer: b) Brewster’s angle
The distance between the center of curvature and the focus of a concave mirror is:
a) Equal to the radius of curvature
b) Less than the radius of curvature
c) Greater than the radius of curvature
d) It depends on the size of the mirror
Answer: b) Less than the radius of curvature
