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Home » An object approaches a convergent lens from the left of the lens with a uniform speed 5 m/s and stops at the focus. The imagea) moves away from the lens with a uniform speed 5 m/sb) moves away from the lens with a uniform accelerationc) moves away from the lens with a non-uniform accelerationd) moves towards the lens with a non-uniform acceleration
An object approaches a convergent lens from the left of the lens with a uniform speed 5 m/s and stops at the focus. The image
a) moves away from the lens with a uniform speed 5 m/s
b) moves away from the lens with a uniform acceleration
c) moves away from the lens with a non-uniform acceleration
d) moves towards the lens with a non-uniform acceleration
CBSE | Class 12 | NCERT Exemplar | Physics | Ray Optics and Optical Instruments
An object approaches a convergent lens from the left of the lens with a uniform speed 5 m/s and stops at the focus. The image
a) moves away from the lens with a uniform speed 5 m/s
b) moves away from the lens with a uniform acceleration
c) moves away from the lens with a non-uniform acceleration
d) moves towards the lens with a non-uniform acceleration

Answer:

c) moves away from the lens with a non-uniform acceleration

In our case, the object approaches a convergent lens from the left at a uniform speed of 5 m/s, causing the image to travel away from the lens with a non-uniform acceleration, moving from F to 2F and then to infinity when the object goes from 2F to F. The object’s and image’s speeds will be equal at 2F.

i

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