Question
What happens to the brightness of the image formed by a
concave mirror when an object moves closer to its focus?Solution
As the object moves closer to the focal point of a concave mirror, the image becomes larger and brighter. This is due to the concentration of reflected light rays forming a more intense and magnified image.
There are three series given below which are following with the same pattern.
Series I: 21, 44, 135, 544, 2725
Series II: 14, B, C, D, E
90     211     67     236     ?     265
...26 63 124 215 342 511 ?
...23   27    54    ?       195    231
...59, 170, 301, 452, ?, 814
30, 39, 66, ? , 174, 255
2, 12, 36, 80, ?, 252
104   106   110   113   ?   126
17                          26                          37                   �...
13, 14, 18, 27, 43, ?
