If AB = 10 cm & DB = 40 cm (diameter). What is the radius of curvature & focal length?
40 cm, 10 cm
20 cm, 20 cm
40 cm, 5 cm
20 cm, 10 cm
Centre of curvature = 20 cm. Focus is point A since parallel rays pass through point A. So, AB = focal length = 10 cm.
If AB = 10 cm and DB = 40 cm (diameter). What is the radius of curvature and focal length?
If AB = 10 cm & DB = 40 cm (diameter)
What is radius of curvature & focal length?
The radius of curvature of a spherical mirror is 20 cm. What is its focal length?
A rectangular block of wood of dimensions 40cm x 20cm x 10cm is kept on a table top. The pressure is greatest when it is rested on