A bulb of 100 is hanging at a height of one meter above the centre of a circular table of diameter . If the intensity at a point on its rim is , then the intensity at the centre of the table will be |
|||||||

a) |
b) |
c) |
d) |

A bulb of 100 is hanging at a height of one meter above the centre of a circular table of diameter . If the intensity at a point on its rim is , then the intensity at the centre of the table will be |
|||||||

a) |
b) |
c) |
d) |

1 Answer

127 votes

**(d)**

The illuminance at

And illuminance at point

From equation (i) and (ii)

127 votes

127