Question

Which of the following tests can be used to find out whether an object is luminous or

not?

1) Look at them. If they can be seen, they are luminous.

2) If they can be seen in a very dark room too, they are luminous.

3) Shine light on them. If light passes through them, they are luminous.

4) Check if they can be seen only during the day. If yes, they are luminous.​

Answer 1

If they can be seen in a very dark room too, they are luminous.

Answer 2

Answer:

Option one and two toghether can be used to find if they are luminous

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