NEET-XII-Physics
09: Ray Optics And Optical Instruments
- #8-aa convex lens of focal length 20 cm, and (b) a concave lens of focal length 16 cm?
(b) a concave lens of focal length 16 cm?Ans : Focal length of the convex lens, f = 20 cm
Image distance = v
According to the lens formula, we have the relation:
Hence, the image is formed 7.5 cm away from the lens, toward its right.
(b) Focal length of the concave lens, f = -16 cm
Image distance = v
According to the lens formula, we have the relation:
Hence, the image is formed 48 cm away from the lens, toward its right.
(b) Focal length of the concave lens, f = -16 cm
Image distance = v
According to the lens formula, we have the relation:
Hence, the image is formed 48 cm away from the lens, toward its right.
- #8-ba concave lens of focal length 16 cm?Ans : Focal length of the concave lens, f = -16 cm
Image distance = v
According to the lens formula, we have the relation:
Hence, the image is formed 48 cm away from the lens, toward its right.