physics mcq class 12

The light excited energy which is emitted when the electrons in atoms undergo transitions to the ground state, is 1. Visible light energy 2. Laser light energy 3. UV light energy 4. None of these

The no. of characteristic and striking proper ties with which a laser light is distinguished from an ordinary light, is 1. 2 2. 3 3. 4 4. 5

The properties of laser light are not present in the light emitted from 1. Sun 2. Incandescent lamp 3. Sodium vapour lamp 4. All of these

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physics mcq class 12

ICBM stands for 1. Inter-Continental Ballistic Missile 2. Inter-Country Ballistic Missile 3. Inter-Community Ballastic Missile 4. All of these

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The light excited energy which is emitted when the electrons in atoms undergo transitions to the ground state, is 1. Visible light energy 2. Laser light energy 3. UV light energy 4. None of these

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The no. of characteristic and striking proper ties with which a laser light is distinguished from an ordinary light, is 1. 2 2. 3 3. 4 4. 5

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The properties of laser light are not present in the light emitted from 1. Sun 2. Incandescent lamp 3. Sodium vapour lamp 4. All of these

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