Light and Lens Quiz
Light and Lens Quiz
Test your knowledge of optics with our engaging quiz focused on light, lenses, and mirrors. This quiz presents a series of questions that challenge your understanding of refraction, image formation, and the properties of various optical devices.
Whether you're a student, teacher, or just curious about the fascinating world of optics, this quiz will help you:
- Enhance your understanding of light behavior.
- Explore concepts like focal length and image distance.
- Practice problem-solving skills in a fun way.
Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass ? The speed of light in vacuum is 3 x 10^8 ms^(-1).
2 x 10^8 ms^(-1)
1.9 x 10^8 ms^(-1)
1.5 x 108 m s-1
3 x 10^8 ms^(-1)
A concave lens of focal length 15.0cm in froms an image 10.0cm from the lens. How far is the object placed from the lens?
U= -35.0cm
U= +25.0cm
U= -30.0cm
U= +30.0cm
An object is placed at a distance of 10.0cm from a convex mirror of focal length 15.0cm. Find the position of the image.
+8.0cm
+10.0cm
-8.0cm
+6.0cm
An object 5.0cm in length is held 25.0cm away from a converging lens of focal length 10.0cm. Find the size of image.
+3.33cm
-3.33cm
-6.22cm
+6.22cm
An object 5.0cm in length is placed at a distance of 20.0cm in front of a convex mirror of radius of curvature 30.0cm. Find the position of the image
-8.6cm
-7.3cm
+8.6cm
-3.8cm
An object is placed at 27.0cm in front of a concave mirror of focal length 18.0cm. At what distance from the mirror should a screen be placed,so that a sharp focused image can be obtained ?
+54.0cm
-54.0cm
-18.0cm
+18.0cm
A linear object is placed at a distance equal to focal length of a convex mirror.Its image is formed
At infinite distance.
Behind the mirror at a distance f/2.
At the principal focus of mirror.
In front of mirror at a distance f/2.
In a convex mirror for any position of the object in front of mirror,the image formed is
Situated between pole and principal focus of mirror.
Diminished in size.
Virtual and erect.
All of these
An object is placed at a distance of 10.0cm in front of a concave mirror of radius of curvature 40.0cm. The image distance and the magnification produced shall respectively be
+20.0cm and +2.0
-20cm and +2.0
+20.0cm and -2.0
-20.0cm and -2.0
An object of height h is placed at a distance of 2f in front of a concave lens of focal length length f. Which one of the following gives correct values of image distance v and it's height h' ?
V = +2/3f ; h' = -2/3h
V = -2/3f ; h' = +2/3h
v = -2f ; h' = -h
V = -2f ; h' = +h
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