Electromagnetic Spectrum Questions and Answers

Which of the following provides information about the universe which is not obtainable using an optical telescope? 1. Radiotherapy 2. Radiography 3. Radio astronomy 4. physiotherapy

UV radiations from the sun are strongly absorbed by 1. ionosphere 2. hydrosphere 3. ozone layer 4. none of these

Long term exposure to UV radiations causes 1. Skin diseases 2. Cancer 3. Common sun burn 4. (1) and (2)

Brief exposure to ultraviolet radiations causes 1. cancer 2. common sunburn 3. tubercullosis 4. None of these causes

All types of radiations such as IR, visible, UV radiations together constitute 1. spectrum 2. visible spectrum 3. electro magnetic spectrum 4. None of these

The source of IR radiations is 1. ice 2. hot clothes iron 3. cold soldering iron 4. boiling water

The prisms made of ....... are used to observe IR radiations 1. pyrex glass 2. ordinary soda glass 3. plint glass 4. rock salt

The glass which absorb infrared radiations is 1. ordinary soda glass 2. rock salt 3. plint glass 4. pyrex glass

Infrared radiations are produced by 1. electric heater 2. hot soldering iron 3. hot clothes iron 4. all of these

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Electromagnetic Spectrum Questions and Answers

The spectrum produced by the transitions of the electrons in atoms, is 1. Visible spectrum 2. UV spectrum 3. IR spectrum 4. Radiowaves

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Which of the following provides information about the universe which is not obtainable using an optical telescope? 1. Radiotherapy 2. Radiography 3. Radio astronomy 4. physiotherapy

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UV radiations from the sun are strongly absorbed by 1. ionosphere 2. hydrosphere 3. ozone layer 4. none of these

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Long term exposure to UV radiations causes 1. Skin diseases 2. Cancer 3. Common sun burn 4. (1) and (2)

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Brief exposure to ultraviolet radiations causes 1. cancer 2. common sunburn 3. tubercullosis 4. None of these causes

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All types of radiations such as IR, visible, UV radiations together constitute 1. spectrum 2. visible spectrum 3. electro magnetic spectrum 4. None of these

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The source of IR radiations is 1. ice 2. hot clothes iron 3. cold soldering iron 4. boiling water

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The prisms made of ....... are used to observe IR radiations 1. pyrex glass 2. ordinary soda glass 3. plint glass 4. rock salt

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The glass which absorb infrared radiations is 1. ordinary soda glass 2. rock salt 3. plint glass 4. pyrex glass

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Infrared radiations are produced by 1. electric heater 2. hot soldering iron 3. hot clothes iron 4. all of these

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