Question

118 An eraser of height 1.0 cm is placed 10.0 cm in front of a two-lens system. Lens 1 (nearer the eraser) has focal length fi - -15 cm, lens 2 has f2 12 cm, and the lens separation is d12 cm. Hence, the value of the image height is 1.2cm.

Answer 1

The given question involves a two-lens system where an eraser is placed 10.0 cm in front of the system. Lens 1 has a focal length of -15 cm and Lens 2 has a focal length of 12 cm. The image height is given as 1.2 cm.

Step-by-step explanation:

The given question involves a two-lens system where an eraser is placed 10.0 cm in front of the system. Lens 1 has a focal length of -15 cm and Lens 2 has a focal length of 12 cm. The image height is given as 1.2 cm.

To find the value of the image height, we can use the lens formula: 1/f = 1/v - 1/u

Let's calculate the image distance and then find the magnification to determine the image height.