Question

A student want to project the image of a candle flame on screen 80cm in front of a mirror by keeping the candle flame at a distance of 20cm from its pole
a)which type of mirror should the student use ?
b) find the magnification of the image produced
c) find the distance between the object and its image
d) draw ray diagram to show the image formation in this case and mark the distance between the object and it image

Answer 1

Heya frnd!!!!!
Here iz ur answer........
a) The student must use a concave mirror. The reason iz very simple. The student wants the image to b projected on a screen, this can only b done by using a concave mirror cuz a convex one always makes a virtual image...
b)Now, we r given that u=-80cm and v=-20cm...
also we know that Magnification =-v/u
therefore m=-(-80/-20)=-4cm...
c) The distance between the object and the image =(80-20)=60cm.... .
That's all about ur answer....
It's my plzr to help u....
Any further doubt in dis question or other, Ask me.... I will try to help u out...
Thank u :-)