ScienceGeneral Science Teaching Exams State Level

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Question1) Infrared is used in night vision equipment when there is insufficient visible light to see.

Option- ['True', 'False']

Answer: True

Explaination:

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Question2) Infrared radiation has the longest wavelength.

Option- ['True', 'False']

Answer: True

Explaination:

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Question3) Visible light has a higher frequency than radio waves.

Option- ['True', 'False']

Answer: True

Explaination:

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Question4) Gamma rays can cause Gene mutation.

Option- ['True', 'False']

Answer: True

Explaination:

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Question5) green house effect is the heating up of the earth's atmosphere which is due to infrared rays.

Option- ['True', 'False']

Answer: True

Explaination:

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Question6) Transition metal ions have an incomplete set of 3d electrons. Changes in the energy of these electrons correspond to the energy of visible light.

Option- ['True', 'False']

Answer: True

Explaination:

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Question7) The correct relationship among these wavelengths is LUV < lVIS < lIR.

Option- ['True', 'False']

Answer: True

Explaination:

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Question8) The device used for measuring the wavelength of X-rays is Bragg Spectrometer.

Option- ['True', 'False']

Answer: True

Explaination:

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Question9) Radar, which stands for radio detection and ranging, is a system that uses reflected radio waves to detect objects and measure their distance and speed.

Option- ['True', 'False']

Answer: True

Explaination:

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Question10) The inside of a car with its windows closed is hotter than outside due to green house effect as the glass in the windows absorb infrared radiations of the sun but do not allow them to escape or reflect back, thus increasing the temperature of the car on the inside.

Option- ['True', 'False']

Answer: True

Explaination:

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