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Human Brain

CBSE Class 10 Biology Chapter 7: Control and Coordination. Is reflex action the only function of the spinal cord? Obviously not, since we know that we are thinking beings. The spinal cord is made up of nerves which supply information to think about. Thinking involves more complex mechanisms and neural connections. These are concentrated in the brain, which is the main coordinating centre of the body. The brain and spinal cord constitute the central nervous system.  

Tracing Evolutionary Relationships

CBSE Class 10 Biology Chapter 9: Heredity and Evolution. When we try to follow evolutionary relationships, how do we identify characteristics as common? These characteristics in different organisms would be similar because they are inherited from a common ancestor. Homologous and analogous characteristics are explained in this video.  

Image Formation by Spherical Mirror: Concave Mirror

CBSE Class 10 Physics Chapter 10: Light – Reflection and Refraction. How are the images formed by the concave mirror? How can we locate the image formed by a concave mirror for different positions of the object? Are the images real or virtual? Are they enlarged, diminished or have the same size? This is demonstrated with the help of an activity with the help of a screen and candle flame.  

Image Formation by Lenses: Convex Lens

CBSE Class 10 Physics Chapter 10: Light – Reflection and Refraction. How are the images formed by the convex lens? How can we locate the image formed by a convex lens for different positions of the object? Are the images real or virtual? Are they enlarged, diminished or have the same size? This is demonstrated with the help of an activity with the help of a screen and candle flame.  

The Human Eye

CBSE Class 10 Physics Chapter 11: Human Eye and the Colorful World. The human eye is one of the most valuable and sensitive sense organs. It enables us to see the wonderful world and the colours around us. The human eye works like a camera. This is explained with detailed information.  

Power of Accommodation

CBSE Class 10 Physics Chapter 11: Human Eye and the Colorful World. The ability of the eye lens to adjust its focal length is called accommodation. The detailed working of accommodation of human eye to see objects at different distances is explained.  

Scattering of Light in Colloidal Solution

CBSE Class 10 Physics Chapter 11: Human Eye and the Colorful World. Have you seen the sky and the Sun at sunset or sunrise? Have you wondered as to why the Sun and the surrounding sky appear red? This is explained with an activity to understand the blue colour of the sky and the reddish appearance of the Sun at the sunrise or sunset.  

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