Question

pls answer this question
if you answer you hain more points and brainliest position.

Answer 1

Answer:

Known :

The focal length (f) = 15 cm

The plus sign indicates that the focal point is real or the rays pass through the point.

The object height (ho) = 5 cm

The object distance (do) = 5 cm

Wanted : the image distance, the magnification of image, the image height and the properties of image

Solution :

Formation of image by converging lens :

Converging lens – problems and solutions 1

The image distance (di) :

1/di= 1/f – 1/do = 1/15 – 1/5 = 1/15 – 3/15 = -2/15

di= -15/2 = -7.5 cm

The minus sign indicates that the image is virtual or the rays do not pass through the image.

The magnification of image (m) :

m = – di/ do= -(-7.5)/5 = 7.5/5 = 1.5

The plus sign indicates that the image is upright.

The image height (hi) :

m = hi/ ho

hi = m ho = (1.5)5 = 10/3 = 7.5 cm

The plus sign indicates that the image is upright.

The properties of the image

– virtual

– upright

– The image greater than the object

– The image distance is greater than the object distance

Answer 2

Explanation:

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$\text { This is Sweety Adihya }$❤️

Image Distance:-

1/di=1/f - 1/do

1/di= 1/15-1/5

1/di=1/15-3/15

1/di=1-3/15

1/di=-2/15

di=15/-2

di= -7.5

Magnification:-

m= -di/do

m= -(-7.5)/5

m=7.5/5

m=1.5

Hope it will help you

@ Sweety Adihya

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