science
Grade-4-
Easy

Question

Which of the following objects is non-luminous?

  1.    
  2.    
  3.    
  4.    

hintHint:

  • 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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