MCQ
Inverse square law for illuminance is valid for
- ✓Isotropic point source
- BCylindrical source
- CSearch light
- DAll types of sources
✓
Answer
Correct option: A.
Isotropic point source
a
(a) Inverse square law for illuminance is valid and can be applied for all types of sources.
(a) Inverse square law for illuminance is valid and can be applied for all types of sources.
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