Magnification
Physics ⇒ Light and Optics
Magnification starts at 10 and continues till grade 12.
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See sample questions for grade 12
A student observes that the image formed by a lens is virtual, erect, and larger than the object. What can be said about the magnification?
Define magnification in the context of optics.
Describe how the sign of magnification relates to the orientation of the image.
Explain why a convex mirror always produces images with magnification less than 1.
Explain why the magnification of a plane mirror is always +1.
If the magnification of a lens is less than 1, what does it indicate about the image?
A concave mirror forms an image 20 cm in front of the mirror when the object is placed 40 cm in front of it. What is the magnification?
A convex lens forms an image 30 cm from the lens when the object is placed 10 cm from the lens. What is the magnification?
A convex mirror forms an image 5 cm behind the mirror when the object is placed 20 cm in front of it. 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?
Which of the following best describes the magnification produced by a simple magnifying glass? (1) Always less than 1 (2) Always equal to 1 (3) Always greater than 1 (4) Can be less than, equal to, or greater than 1
Which of the following is NOT a possible value for magnification? (1) 0 (2) 1 (3) -1 (4) 2
Which of the following is the correct formula for magnification in terms of image and object distances for a mirror? (1) m = v/u (2) m = -v/u (3) m = u/v (4) m = -u/v
Which of the following statements is correct? (1) Magnification is always a whole number. (2) Magnification can be a fraction. (3) Magnification is always negative. (4) Magnification is always positive.
Fill in the blank: For a real image formed by a convex lens, the magnification is ________.
Fill in the blank: If the image is erect and larger than the object, the magnification is ________ and greater than 1.
The magnification (m) produced by a lens is given by m = _________.
True or False: A magnification of 1 means the image is the same size as the object.
True or False: A virtual image formed by a mirror always has a positive magnification.
True or False: For a plane mirror, the magnification is always 1.
