a 2.0 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 10cm. the distance of the object from the lens is 15cm.find the nature,position,size of the image.also find its magnification
Answers
Answered by
4
Height of the object $h _{ 0 }$ = +2.0 cm
Focal length f = +10 cm
Object-distance u = -15cm
Image-distance v = ?
1/v - 1/u = 1/f ====>1/v = 1/f + 1/u ===> 1/v = 1/10 + 1/-15
1/v = -2+3/30
1/v = 1/30
v = 30 cm
The positive sign of v shows that the image is formed at a distance of 30 cm on the other side of the optical centre.The image is real and inverted.
Focal length f = +10 cm
Object-distance u = -15cm
Image-distance v = ?
1/v - 1/u = 1/f ====>1/v = 1/f + 1/u ===> 1/v = 1/10 + 1/-15
1/v = -2+3/30
1/v = 1/30
v = 30 cm
The positive sign of v shows that the image is formed at a distance of 30 cm on the other side of the optical centre.The image is real and inverted.
Similar questions