1.

9) A 10 cm long stick is kept in front of aconcave mirror having focal length of 10 cm insuch a way that the end of the stick closest to thepole is at a distance of 20 cm. What will be thelength of the image?

Answer»

1/u+1/v=1/f1/v=1/f-1/uu/v=u/f-1= -20cm / -10cm2-1=1u/v=1m=h2/h1=v/uh2=-v/u×h1=1×h1= -1×10=-10cmthe minus sign shows that image is invertedhence the length of the image is 10 cm



Discussion

No Comment Found

Related InterviewSolutions