Light Waves II - SS3 Physics Past Questions and Answers - page 1
Which of these is not a property of lenses?
Focal length
Aperture
Refractive index
Magnification
Aberrations of lenses are________
obstructions or obstacles that prevent image from being produced by a lens
corrections or improvements in the quality of the image produced by a lens
openings or channels by which the image is produced by a lens
distortions or imperfections in the image produced by a lens
Magnification is the ________
The rate at which an object is enlarged by a lens
The degree to which an object is enlarged by a lens
The speed with which an object is formed by a lens
The distance between an object and its image formed by a lens
A convex lens is used to
Reflect light waves to a focal point
Diverge light waves from a focal point
Converge light waves at a focal point
Diffract light waves from a focal point
A concave lens is used to
Enlarge light waves
Reinforce light waves
Focus light waves
Diverge light waves
What is a lens and how many types are there?
Lenses are transparent objects that are used to refract and focus light waves. They are commonly used in optics and imaging systems to create clear and magnified images of objects. There are two types of lenses: convex and concave.
Users' Answers & CommentsWhat is the importance of lenses and their properties?
Understanding the properties of lenses is essential for designing and using optical systems effectively. By controlling the shape, size, and materials of lenses, it is possible to create clear and magnified images of objects.
Users' Answers & CommentsWhich of the following optical instruments is used to magnify small objects?
Telescope
Microscope
Spectroscope
Periscope
Which part of the eye is responsible for controlling the amount of light that enters the eye?
Iris
Pupil
Lens
Retina
What type of lens is used to correct farsightedness?
Convex lens
Concave lens
Plano-convex lens
Plano-concave lens