A convex lens of focal length 12.5 cm is used as a simple microscope. When the image is formed at infinite, Magnification is (Near point for the normal vision is 25 cm ).

Question

A convex lens of focal length 12.5 cm is used as a simple microscope. When the image is formed at infinite, Magnification is (Near point for the normal vision is 25 cm ). (A) 25 (B) 2.5 (C) 2.0 (D) 1.0

Tardigrade Admin · Accepted Answer

Magnifying power M=(D/ f )=(25/12.5)=2

Q. A convex lens of focal length $12.5 c m$ is used as a simple microscope. When the image is formed at infinite, Magnification is ______(Near point for the normal vision is $25 c m$ ).

25

2.5

2.0

1.0

Magnifying power $M = \frac{D}{f} = \frac{25}{12.5} = 2$

Q. A convex lens of focal length 12.5cm is used as a simple microscope. When the image is formed at infinite, Magnification is ______(Near point for the normal vision is 25cm ).

25

2.5

2.0

1.0

Magnifying power M=fD​=12.525​=2

Q. A convex lens of focal length $12.5 c m$ is used as a simple microscope. When the image is formed at infinite, Magnification is ______(Near point for the normal vision is $25 c m$ ).

Magnifying power $M = \frac{D}{f} = \frac{25}{12.5} = 2$