Magnification
Physics ⇒ Light and Optics
Magnification starts at 10 and continues till grade 12.
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See sample questions for grade 11
Describe what is meant by angular magnification.
Explain why the magnification of a plane mirror is always 1.
If a convex lens forms a virtual image, what can you say about the object position relative to the lens?
If the image formed by a lens is virtual and larger than the object, what can you say about the magnification?
A concave mirror forms an image 10 cm high of an object 2 cm high. What is the magnification?
A convex mirror forms an image 4 cm high of an object 8 cm high. What is the magnification?
A lens forms an image 15 cm from the lens when the object is placed 5 cm from the lens. What is the magnification?
A lens forms an image that is 4 times smaller than the object and inverted. What is the magnification?
Magnification produced by a plane mirror is always (1) greater than 1 (2) less than 1 (3) equal to 1 (4) zero
The magnification of a simple microscope is given by (1) D/f (2) f/D (3) D+f/f (4) D-f/f, where D is the least distance of distinct vision and f is the focal length.
Which instrument uses the concept of magnification to enlarge small objects for observation? (1) Microscope (2) Barometer (3) Ammeter (4) Thermometer
Which of the following is NOT a possible value for magnification? (1) 2 (2) -1 (3) 0 (4) 1
Fill in the blank: If the image is real and inverted, the magnification is _______.
Fill in the blank: The magnification of a convex mirror is always _______ than 1.
Fill in the blank: The magnification of a virtual image formed by a mirror is always _______.
The magnification of a lens is given by the ratio of _______ to _______.
True or False: A magnification of 1 means the image and object are of equal size.
True or False: A negative magnification indicates that the image is inverted relative to the object.
True or False: Magnification has no unit.
True or False: The magnification of a concave mirror can be both positive and negative depending on the position of the object.
