Reflection of Light Puzzles
Test your understanding of the reflection of light, its laws, and reflection by curved mirrors with these fun puzzles. Click the buttons to reveal hints and answers.
Puzzle 1: What is the first law of reflection?
It involves the angle of incidence and the angle of reflection.
The angle of incidence is equal to the angle of reflection.
Puzzle 2: What does the second law of reflection state?
Think about the incident ray, reflected ray, and the normal.
The incident ray, the reflected ray, and the normal all lie in the same plane.
Puzzle 3: What type of mirror forms an inverted and real image?
It is a type of curved mirror.
A concave mirror forms an inverted and real image when the object is placed beyond its focal point.
Puzzle 4: What is the focal length of a mirror if its radius of curvature is 20 cm?
Focal length is half the radius of curvature.
The focal length is 10 cm (f = R/2).
Puzzle 5: How does the image formed by a convex mirror always appear?
Convex mirrors form virtual images.
The image is always virtual, upright, and smaller than the object.
Puzzle 6: Where is the image located when an object is placed at the focal point of a concave mirror?
Think about the behavior of reflected rays.
The image is formed at infinity.
Puzzle 7: What is the Focal length and Radius of curvature formula?
the distance of centre of curvature from pole is double as the focus.
The mirror formula is: 1/f = 1/v + 1/u, where f = focal length, v = image distance, and u = object distance.
Puzzle 8: Why are concave mirrors used in shaving mirrors?
Think about the type of image needed for shaving.
Concave mirrors are used because they produce a magnified and upright image when the object is placed between the focal point and the mirror.
Puzzle 9: How does the distance of an object from a mirror affect the size of the image?
Think about the mirror formula and magnification.
For concave mirrors, the image size increases as the object approaches the focal point. For convex mirrors, the image size decreases as the object moves farther away.
Puzzle 10: Why are convex mirrors used as rearview mirrors in vehicles?
Consider the type of image formed and its field of view.
Convex mirrors are used because they provide a wide field of view and form smaller, upright, and virtual images.
