A convex mirror has a radius of curvature whosemagnitude is 45 cm. The mirror is
ID: 1677303 • Letter: A
Question
A convex mirror has a radius of curvature whosemagnitude is 45 cm. The mirror is positioned on a horizontaloptical bench with its front surface at 0 cm. A 11.0 cm longfluorescent lamp oriented vertically is placed at +94 cm. a-What is the focal length of the mirror?b-At what distance from the mirror can we find a sharpimage of the lamp?
c-How tall is the image of thelamp?
d-If the convex mirror were replaced by a plane mirrorand the lamp moved to 218 cm from the plane mirror, how tall wouldthe image be?
a-What is the focal length of the mirror?
b-At what distance from the mirror can we find a sharpimage of the lamp?
c-How tall is the image of thelamp?
d-If the convex mirror were replaced by a plane mirrorand the lamp moved to 218 cm from the plane mirror, how tall wouldthe image be?
Explanation / Answer
a : f= (-r/2) f= (-45/2) b: (1/d1) + ( 1/d2 ) = 1/f (1/d1) + ( 1/94 ) = 1/f c: step 1 M = ( d1) / (d2) step 2 M*(long fluorescent lamp) M*11 Hope this help you ;)