MCQEasy1 mark
7
Select the correct option for each of the following questions Observe the diagram which shows the path of an incident ray through an optical plane LL" of a lens. The focal length of the lens is 20 cm.
This type of lens can be used: (a) to correct hypermetropia. (b) to correct myopia. (c) to diverge light. (d) in the front door peepholes.
Topic: Lenses and image formation
Previous-year question practice database
Try it
Pick an option and check your answer. The full worked answer is below either way.
Answer
Exam answer
(a) to correct hypermetropia.
Explanation
A convex lens is used to correct hypermetropia.
More from Refraction through a Lens
The distance (V) of a virtual image formed by a lens of focal length 15 cm never exceeds a certain finite value, then this value will be:
(a) less than 15 cm
(b) between 15 cm to 30 cm
(c) less than or equal to 30 cm
(d) less than or equal to 15 cm2026Identify the type of lens used.2026What would be the magnification (more than 1 / less than 1 / equal to 1) if the object is placed between F and 2F of the above lens?2026An object placed in front of a convex lens, forms an image of same size on a screen. Moving the object 12 cm closer to the lens results in the formation of a real image which is three times the size of the object. Calculate the focal length of the lens.2026For a real image formed by a convex lens, the ratio of I : O = 2 : 5, then the object is:
(I is the height of the image and O is the height of the object)
(a) between O and F
(b) beyond 2F
(c) at F
(d) between F and 2F2025 An object is placed at 2F position of a convex lens. Draw a ray diagram showing the formation of the image.2025