Question

An object is placed 20 cm in front of a concave lens of focal length 10 cm. Find the position of image formed.

Answer 1

$\huge\bold\red{Hey! }$

Solution:-

Concave mirror=-20f

=-101/f

1/v+1/u1/-10

1/v+1/-201/v

1/20-1/101/v

1-2/201/v

-1/20v

=-20

Image is formed 20cm from the pole in front of the lens nature:

m=-v/u

=-(-20)/-20

=-1

So,

The image is real ,inverted and same size image.

Answer 2

$\huge{\underline{\mathbb{\red{Answer}}}}$

Concave mirror=-20f

=-101/f

1/v+1/u1/-10

1/v+1/-201/v

1/20-1/101/v

1-2/201/v

-1/20v

=-20

Image is formed 20cm from the pole in front of the lens nature:

m=-v/u

=-(-20)/-20

=-1

$\color{red}\huge\bold\star\underline\mathcal{HENCE}\star$

The image is real ,inverted and same size image.

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$\huge{\underline{\underline{\mathfrak{Thank you}}}}$