A planocovex lens is made of a material of refractive in μ=1.5 The radius of curvature of curved surface of the lens is 20.cm. If its plane surface is silvered, the focal length of the silvered lens will be
- August 13, 2020
- Category: Chapter 32 - Ray Optics , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics ,
Related
A plano-convex lens of focal length 20 cm has its plane side silvered. (1) The radius of curvature of curved surface of given plano-convex lens is equal to half of radius of curvature of
[vc_row][vc_column][stm_post_info css=".vc_custom_1437111129257{margin-bottom: 0px !important;}"][vc_row_inner][vc_column_inner width="1/6"][/vc_column_inner][vc_column_inner width="1/6"][/vc_column_inner][/vc_row_inner][vc_row_inner][vc_column_inner width="1/6"][/vc_column_inner][vc_column_inner width="2/3"][vc_single_image image="51967" img_size="large"][vc_single_image image="51970" img_size="large"][/vc_column_inner][vc_column_inner width="1/6"][/vc_column_inner][/vc_row_inner][vc_row_inner][vc_column_inner width="1/2"][stm_post_tags][/vc_column_inner][vc_column_inner width="1/2"][stm_share code="JTNDc3BhbiUyMGNsYXNzJTNEJTI3c3RfZmFjZWJvb2tfbGFyZ2UlMjclMjBkaXNwbGF5VGV4dCUzRCUyNyUyNyUzRSUzQyUyRnNwYW4lM0UlMEElM0NzcGFuJTIwY2xhc3MlM0QlMjdzdF90d2l0dGVyX2xhcmdlJTI3JTIwZGlzcGxheVRleHQlM0QlMjclMjclM0UlM0MlMkZzcGFuJTNFJTBBJTNDc3BhbiUyMGNsYXNzJTNEJTI3c3RfZ29vZ2xlcGx1c19sYXJnZSUyNyUyMGRpc3BsYXlUZXh0JTNEJTI3JTI3JTNFJTNDJTJGc3BhbiUzRSUwQSUzQ3NwYW4lMjBjbGFzcyUzRCUyN3N0X3NoYXJldGhpc19sYXJnZSUyNyUyMGRpc3BsYXlUZXh0JTNEJTI3JTI3JTNFJTNDJTJGc3BhbiUzRQ=="][/vc_column_inner][/vc_row_inner][stm_post_author][stm_post_comments][/vc_column][/vc_row]
The radius of curvature of the convex face of a plano-convex lens is 12 cm and its refractive index is 1.5. (a) Find the focal length of this lens. The plane surface of the lens is now silvered.
[vc_row][vc_column][stm_post_info css=".vc_custom_1437111129257{margin-bottom: 0px !important;}"][vc_row_inner][vc_column_inner width="1/6"][/vc_column_inner][vc_column_inner width="1/6"][/vc_column_inner][/vc_row_inner][vc_row_inner][vc_column_inner width="1/6"][/vc_column_inner][vc_column_inner width="2/3"][vc_single_image image="21015" img_size="large"][vc_single_image image="21021" img_size="large"][/vc_column_inner][vc_column_inner width="1/6"][/vc_column_inner][/vc_row_inner][vc_row_inner][vc_column_inner width="1/2"][stm_post_tags][/vc_column_inner][vc_column_inner width="1/2"][stm_share code="JTNDc3BhbiUyMGNsYXNzJTNEJTI3c3RfZmFjZWJvb2tfbGFyZ2UlMjclMjBkaXNwbGF5VGV4dCUzRCUyNyUyNyUzRSUzQyUyRnNwYW4lM0UlMEElM0NzcGFuJTIwY2xhc3MlM0QlMjdzdF90d2l0dGVyX2xhcmdlJTI3JTIwZGlzcGxheVRleHQlM0QlMjclMjclM0UlM0MlMkZzcGFuJTNFJTBBJTNDc3BhbiUyMGNsYXNzJTNEJTI3c3RfZ29vZ2xlcGx1c19sYXJnZSUyNyUyMGRpc3BsYXlUZXh0JTNEJTI3JTI3JTNFJTNDJTJGc3BhbiUzRSUwQSUzQ3NwYW4lMjBjbGFzcyUzRCUyN3N0X3NoYXJldGhpc19sYXJnZSUyNyUyMGRpc3BsYXlUZXh0JTNEJTI3JTI3JTNFJTNDJTJGc3BhbiUzRQ=="][/vc_column_inner][/vc_row_inner][stm_post_author][stm_post_comments][/vc_column][/vc_row]