Concave Lens – Practice Questions
Q1. A concave lens forms a virtual image when an object is placed 15 cm in front of it. If the image distance is -30 cm, find the focal length.
Q2. For a concave lens, an object is placed 25 cm in front of it, and the resulting image is formed at -50 cm. Determine the focal length.
Q3. A concave lens is used to form an image. If the object distance is -18 cm and the image distance is -9 cm, calculate the focal length.
Q4. Suppose a concave lens forms a virtual image when the object is placed 12 cm in front of it, and the image distance is -24 cm. Determine the focal length.
Q5. For a concave lens, the object distance is -30 cm, and the image is formed at -15 cm. Find the focal length.
Concave Lens
Concave Lens is a diverging lens that scatters the incident light after refraction. Concave Lens is thinner in the middle and thicker at the edges. The images formed by a concave lens are virtual and erect. Power of the Concave lens is negative and it is widely used in the correction of myopia.
In this article, we will learn in detail about the Concave Lens, its properties, image formation, characteristics of the image, formula for calculating power, and magnification along with its application.
Table of Content
- What is Concave Lens?
- Parts of Concave Lens
- Properties of Concave Lens
- Sign Convention of Concave Lens
- Ray Diagram of Concave Lens
- Concave Lens Formula
- Applications of Concave Lens