A virtual image is one:
- toward which light rays converge but do not pass through
- from which light rays diverge but do not pass through
- from which light rays diverge as they pass through
- toward which light rays converge and pass-through
Correct option: from which light rays diverge but do not pass through
Which of the following is true of all virtual images?
- They can be seen but not photographed
- They are ephemeral
- They are smaller than the objects
- None of the above
Correct option: None of the above
When you stand in front of a plane mirror, your image is:
- real, erect, and smaller than you
- real, erect, and the same size as you
- virtual, erect, and smaller than you
- virtual, erect, and the same size as you
Correct option: virtual, erect, and the same size as you
An object is 2 m in front of a plane mirror. Its image is:
- virtual, inverted, and 2 m in front of the mirror
- virtual, erect, and 2 m in front of the mirror
- real, erect, and 2 m behind the mirror
- none of the above
Correct option: none of the above
The image produced by a convex mirror of an erect object in front of the mirror is always:
- virtual, erect, and larger than the object
- virtual, erect, and smaller than the object
- real, erect, and larger than the object
- real, erect, and smaller than the object
Correct option: virtual, erect, and smaller than the object
An erect object is located between a concave mirror and its focal point. Its image is:
- real, erect, and larger than the object
- real, inverted, and larger than the object
- virtual, erect, and larger than the object
- virtual, inverted, and larger than the object
Correct option: virtual, erect, and larger than the object
An erect object is in front of a convex mirror a distance greater than the focal length. The image is:
- real, inverted, and smaller than the object
- virtual, inverted, and larger than the object
- real, inverted, and larger than the object
- virtual, erect, and smaller than the object
Correct option: virtual, erect, and smaller than the object
At what distance in front of a concave mirror must an object be placed so that the image and object are the same size?
- a focal length
- half a focal length
- twice a focal length
- less than half focal length
Correct option: half a focal length
A point source is to be used with a concave mirror to produce a beam of parallel light. The source should be placed:
- as close to the mirror as possible
- at the center of curvature
- midway between the center of curvature and the focal point
- midway between the center of curvature and the mirror
Correct option: midway between the center of curvature and the mirror
What type of eyeglasses should a nearsighted person wear?
- diverging lenses
- bifocal lenses
- converging lenses
- plano-convex lenses
Correct option: diverging lenses
Which of the following is NOT correct for a simple magnifying glass?
- The image is erect
- The image is larger than the object
- The object is inside the focal point
- The lens is diverging
Correct option: The lens is diverging
An ordinary magnifying glass in front of an erect object produces an image that is:
- real and erect
- real and inverted
- virtual and inverted
- virtual and erect
Correct option: virtual and erect
An object is 30 cm in front of a converging lens of focal length 10 cm. The image is:
- real and larger than the object
- real and the same size than the object
- real and smaller than the object
- virtual and the same size than the object
Correct option: real and smaller than the object
A concave spherical mirror has a focal length of 12 cm. If an erect object is placed 6 cm in front of it:
- the magnification is 2 and the image is erect
- the magnification is 2 and the image is inverted
- the magnification is 0.67 and the image is erect
- the magnification is 0.67 and the image is inverted
Correct option: the magnification is 2 and the image is erect