Flat Mirrors
Flat mirrors, also known as plane mirrors, are fundamental optical devices with a flat reflective surface. They play a crucial role in everyday life, found in items like bathroom mirrors, car mirrors, and decorative mirrors. Despite their simple appearance, flat mirrors have important properties in optics. They obey the law of reflection, which states that the angle of incidence is equal to the angle of reflection. This property makes them valuable for creating reflections used in various optical systems. Understanding the principles behind flat mirrors is essential in designing optical devices and understanding how light behaves in different environments.
Questions
- What does the first law of reflection state?
- I am doing the Plane Mirror Lab in physics class. I place a pin a distance of 4.9 cm from a plane mirror. How far behind the mirror can the image be expected to appear?
- Why do the images produced by two opposing flat mirrors appear to be progressively smaller?
- You are standing 8 feet from a flat mirror. In the mirror, you hold a ruler that is exactly 12-inches long. How long will the image of the ruler be in the mirror?
- What is the use of plane mirrors?
- What happens to parallel rays when they hit a flat piece of glass at an oblique angle with the surface of the glass?
- What are flat mirrors used for?
- What is the law of reflection?
- A bus driver has the centre of a 20 cm wide plain mirror placed 50 cm in front of him. if the rear of the bus is 500 cm directly behind the plain mirror, how wide id the field of vision of the bus driver whenever he looks into the mirror while driving?
- A ray of sunlight hits a frozen lake at a 45° angle of incidence. At what angle of refraction does the ray penetrate the ice? At what angle does it penetrate the water beneath the ice?
- A light ray approaches a mirror at an angle of incidence of 25°. What is the angle of reflection?
- Write down the properties of an image formed in a plane mirror?
- When using a shaving mirror with a focal length of 72 cm to view the image the face, if the face is 18 cm from the mirror, determine the image distance and the magnification of the face.
- I stand 68 cm from my dresser mirror, inspecting my scalp. How far is the image of my scalp located from my scalp?
- A person 1.80 m tall stands in front of a plane mirror. What is the minimum height of the mirror, and how high must its lower edge be above the floor for the person to be able to see his/her whole body? Person’s eyes are 6.0 cm below the top of the head.
- If a laser strikes a mirror with an angle of incidence of 36°, what is the angle between the angle of incidence and angle of reflection?
- I use a cosmetic mirror to magnify my eyelashes. My 1.2-cm long eyelashes are magnified to 1.6 cm when placed 5.8 cm from the mirror, how can I determine the image distance for such an upright image?
- A light ray approaches a mirror at an angle of 22° with the mirror surface. What is the angle of reflection of this light ray?
- What is the difference between a plane mirror and a curved mirror?
- Why are convex mirrors used instead of concave mirrors as rear view mirrors?