Question

Part (B)
2 Marks Questions
(2
09) Which mirror is used in the following ray diagram? Write the properties of the image formed.
ਦਿੱਤੇ ਹੋਏ ਰੇਖਾ ਚਿੱਤਰ ਵਿੱਚ ਕਿਹੜਾ ਦਰਪਣ ਵਰਤਿਆ ਗਿਆ ਹੈ? ਤਿਬਿੰਬ ਦੇ ਲੱਛਣ ਦੱਸੋ ।
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0) Why do you think the noble gases are placed in a separate group? Name any two noble ga​

Answer 1

noble gasses are placed in separate groups because they are in stable state which means that they are having two electrons in first shell and eight in second shell

two noble gasses are argon and krypton

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