Archive
16th of March 2017
Physics
Q:

The image formed by spherical mirror is real, inverted and is of magnification -2.If the image is at a distance of 30 cm from the mirror,where is the object placed?Find the focal length of the mirror.List 2 characteristics of the image formed if the object is moved 10 cm towards the mirror?(PLs ans during live chat URGENTLY)

Nisha_vini29 - CBSE - Class X

Thursday, March 16, 2017 at 16:24:PM

A:

Hi,

begin mathsize 14px style Step space straight I colon
Use space the space magnification space formula colon space straight m space equals space fraction numerator negative straight v over denominator straight u end fraction space and space find space out space the space object space distance.
Step space II colon
Use space mirror space formula space 1 over straight f equals 1 over straight v plus 1 over straight u space and space find space the space focal space length.
S tep space III colon
Case space given space that space object space distance space changes.
Use space the space given space straight u space and space calculated space straight f space in space the space mirror space formula space and space find space out space the space new space image space distance space apostrophe straight v apostrophe
Depending space on space the space sign space of space straight u space and space straight v comma space the space nature space of space the space image space formed space can space be space mentioned. end style

Thursday, March 16, 2017 at 17:29:PM