question_answer

A thick mirror produces a number of images of an object. The brightest image is

A)  first                                      

B)  second     

C)  third                    

D)         last one   

Correct Answer: B

Solution :

A thick mirror forms a number of images. \[{{I}_{1}}\] image is formed by front surface which is unpolished and hence/ reflects only a small part of intensity of light; while second image is formed by polished surface which reflects most of intensity. Hence, second image is brightest.