CBSE Class 7 - Reflection of Light Videos

• if you are standing 2 metre away a plane measure the distance between you and your image is
• what is real and virtual image
• Why shadow doesn't give the idea of  exact size of the  object?prove it. 
• Four student want 2 explain how hologram works to a follow student by using four concave mirrors of focal length 12cm,15cm,15cm and 10cm.
• Give one situation of real image
• How does light reflect?
• What happens when light falls on a mirror? What is this phenomenon called?
• Why is it not possible to obtain a virtual image on the screen?
• What is an image?
• Give two characteristic features of the image produced by a plane mirror.

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