sunnymoon:

can someone help me with this physics question. What is the characteristic of the image formed by the periscope with convex mirror on top and plane mirror at the bottom? http://i60.tinypic.com/2094s34.jpg\">

Thanks

Yes answer is A.

A convex mirror is used in seven-eleven to enable wide range of vision. The objects will look smaller. See it for your sell at any seven eleven store

It is common to see some students not doing well academically in Sec 3 but most of these students will pick up early in Sec 4. Students tend to be busy with homework and school activities like camps, CCA, CIP, functions, etc. Time management is key to their success here. Students also tend to be more matured in Sec 4 , finally releasing what needs to be done. Do not stop working with our youths