The end of a glass rod has the shape of a hemisphere of radius 3.2 cm. The hemis

Question

The end of a glass rod has the shape of a hemisphere of radius 3.2 cm. The hemisphere bulges outward. Point P is in the air along the optical axis at a distance of 9.3 cm in front of the glass rod. What is the image distance of a small object placed at point P? Let the indices of refraction nglass = 1.56 and nair = 1.00.

11 cm in front of the glass rod

23 cm into the glass rod

15 cm into the glass rod

11 cm into the glass rod

The end of a glass rod has the shape of a hemisphere of radius 3.2 cm. The hemisphere bulges outward. Point P is in the air along the optical axis at a distance of 9.3 cm in front of the glass rod. What is the image distance of a small object placed at point P? Let the indices of refraction nglass = 1.56 and nair = 1.00.

11 cm in front of the glass rod

23 cm into the glass rod

15 cm into the glass rod

11 cm into the glass rod

Explanation / Answer

u( object distance) = 9.3 cm

image distance =?

1/9.3 + 1.56/ v =( 1.56 - 1)/ 3.2

v = 23 cm into the glass rod

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