science
Grade-4-
Easy
Question
Which of the following objects is non-luminous?
Hint:
- The objects which don't emit light for their own are known as non luminous objects.
The correct answer is:
Option a
- Option a has no light emitting object so it is a non luminous object.
- All the other three options are emitting light for their own so are luminous objects.
- Option a has non luminous object.
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