Mirror for Focusing Light
Doctors need a mirror that can concentrate a parallel beam of light onto a specific small area for examination, such as looking at teeth. This requires a mirror with converging properties.
Types of Mirrors and Their Properties
- Concave Mirror: Reflects parallel light rays and converges them to a focal point. This concentration of light is ideal for examination purposes.
- Convex Mirror: Reflects light rays outwards, causing them to diverge. This provides a wider field of view but does not focus light.
- Plane Mirror: Reflects light rays without changing their convergence or divergence. It provides a true image but does not focus light.
Selecting the Right Mirror
To focus a parallel beam of light onto a patient's organs like teeth, a mirror that converges light is required. A concave mirror has precisely this property. It gathers the parallel light rays and directs them to a focal point, intensifying the light on the target area for better visibility during examination.
Convex and plane mirrors do not possess the necessary focusing ability for this specific medical application.
Conclusion
Therefore, the mirror used by doctors to focus a parallel beam of light on patient's organs for examination is a concave mirror.
Similar Questions
- If an object is placed between infinity and the pole (P) in front of a convex mirror, what type of image will be formed?
- If a spherical mirror is immersed in a liquid, its focal length will
- A concave mirror produces three times magnified (enlarged) real image of object placed at 10 cm in front of it. Which option describes the image correctly?
- The radius of curvature of a spherical mirror is 20 cm. Its focal length is:
- An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. The magnification is:
- The nature of the image formed by a concave mirror if the magnification produced by the mirror is +3 is:
When an object is kept at a distance 20 cm in front of a concave mirror, a real image is formed at the centre of curvature of the mirroe. Magnification produced by the mirroe is ______________ .
When an object is kept in front of a concave mirror of a focal length of 10 cm, a real image is formed at a distance of 20 cm in front of the mirror. Here, the object distance is .............
Important Questions from Mirrors and Images
What type of mirror is used in the headlights of vehicles?
- A concave mirror forms a real and inverted image of a distant object at a distance of $15 \text{ cm}$ from the mirror.
If an object is placed $20 \text{ cm}$ in front of this mirror, what will be the nature and magnification of the image formed? The number of images observable between two parallel mirror is
An object is placed at a distance of \(\frac{f}{2}\) from a convex lens. The image will be
Which of the following pair is correct?
I. Mirror formula : (1/v) – (1/u) = (1/f)
II. Lens formula : (1/v) + (1/u) = (1/f)
