Concave Lens -Multiple Choice Questions Quiz

Interactive MCQs on “Concave Lens”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: Question: A concave lens is also known as a:

(a) Convex lens
(b) Plane lens
(c) Diverging lens
(d) Converging lens

Question 2: Question: The focal length of a concave lens is:

(a) Always positive
(b) Always negative
(c) Can be either positive or negative
(d) Always zero

Question 3: Question: When an object is placed in front of a concave lens, the image formed is:

(a) Real, inverted, and enlarged
(b) Real, inverted, and reduced
(c) Virtual, erect, and enlarged
(d) Virtual, erect, and reduced

Question 4: Question: For a concave lens, the focal length is:

(a) The distance between the lens and its principal focus
(b) Half the radius of curvature
(c) The distance between the lens and its center of curvature
(d) The distance between the lens and its pole

Question 5: Question: A concave lens has a focal length of -15 cm. What type of lens is it, and where is the focal point located?

(a) Converging lens; 15 cm in front of the lens
(b) Diverging lens; 15 cm in front of the lens
(c) Converging lens; 15 cm behind the lens
(d) Diverging lens; 15 cm behind the lens

Question 6: Question: The image formed by a concave lens when the object is placed at the center of curvature is:

(a) Real, inverted, and of the same size as the object
(b) Real, inverted, and highly enlarged
(c) Real, inverted, and reduced
(d) Virtual, erect, and highly enlarged

Question 7: Question: A concave lens forms a virtual image when the object is placed:

(a) Beyond its focal length
(b) Between its focal length and twice the focal length
(c) At its focal point
(d) In front of its focal length

Question 8: Question: The power of a concave lens is measured in:

(a) Diopters (D)
(b) Watts (W)
(c) Newtons (N)
(d) Ohms (Ω)

Question 9: Question: A concave lens has a power of -2.5 D. What is its focal length?

(a) -2.5 cm
(b) -0.4 cm
(c) 2.5 cm
(d) 0.4 cm

Question 10: Question: A concave lens forms a virtual and erect image of an object placed 12 cm in front of it. If the focal length of the lens is -8 cm, what is the magnification of the lens?

(a) 0.67
(b) 1.5
(c) -0.67
(d) -1.5