NCERT Solutions for Class 7 Science Chapter 15 Light

In this chapter, the reader gets to know about the various types of bodies such as luminous, non-luminous, transparent, opaque, transparent, and translucent objects. Readers are introduced to different types of mirrors that one experiences in everyday life. The chapter has been made easy with the help of many activities. The following are the points discussed in the chapter:

• Light is an energy that causes the sensation of vision. It travels along straight lines.
• Any polished or shining surface acts as a mirror.
• An image which can be obtained on a screen is called a real image. The image that is cast on a screen is real.
• An image which cannot be obtained on a screen is called a virtual image.
• A concave mirror can form a real and inverted image. When the object is placed very close to the mirror, the image formed is virtual, erect and magnified.
• The image formed by a convex mirror is erect, virtual, and smaller in size than the object.
• A convex lens is also known as a magnifying glass.
• White light is composed of seven colours.