Q38. List the three conditions necessary for formation of shadow.

 

Q39. Differentiate between luminous and non-luminous objects.

 

Q40. How a shadow differs from an image?

 

Q41. Explain reflection of light with help of an activity.

 

Q42. Differentiate between transparent, translucent and opaque object.

 

Q43. Explain with an example that light travels in straight line.

 

 

 

 

 

 

 

 

 

 


Last modified: Tuesday, 1 January 2019, 11:07 PM