Test- Science (Light and Optics)

(Q.1)  What is the property of image formed by a concave lens?                                                                      

(Q.2) For which colour the refractive index of material is maximum?                                                                                      

(Q.3)   What happens to the light when it travels from denser to rarer medium?                           

(Q.4)   Can an enlarged image be formed by a convex mirror?                                                                                      

(Q.5)   An object placed at F of a convex lens will produce an image                                                 

(Q.6)   Where will the image be formed when an object is placed between the pole and focus point of the mirror?                                                                                                                                             

(Q.7)

Negative value of focal length of a spherical mirror indicates that it is

 (Q.8)    Light is a form of ___________ radiation.                                                                                                                      

(Q.9)   A ________ image can be obtained on a screen.                                                                                                                

(Q.10)   An object placed at F of a concave mirror will produce an image.                                                                       

(Q.11)   An object placed at 2F of a convex lens will produce an image.                                                                          

(Q.12)   An object placed between F and 2F of a convex lens will produce an image.                                                   

 (Q.13)   Power of a lens is.                                                                                                                                       

 (Q.14)  Convex lenses are also called.                                                                                                                              

(Q.15)   The three primary colours are.                                                                                                                           

(Q.16)   The refractive index of diamond is 2.42. What is the meaning of this statement?                          

(Q.17)   What are the uses of a concave and convex mirror?                                                                                 

(Q.18)   Define reflection of light.                                                                                                                         

(Q.19)   What is refraction of light? Write a law of refraction.                                                                

(Q.20)   What is the difference between real and virtual images?                                                                         

(Q.21)   Why do we prefer a convex mirror as a rear-view mirror in vehicles.                                                

 (Q.22)  Write Mirror and Lens formula.                                                                                                              

(Q.23) What is Magnification formula

 (Q.24) What is Refractive Index give formula  also.