Physics - General Science Objective Questions and Answers for Competitive Exams


Which of the following light rays is used for eliminating bacteria ?

A Alpha rays
B Infrared rays
C Ultra-violet radiation
D Microwave radiation
Answer & Explanation
Option: [C]

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A Continental Platform
B Continental Slope
C Continental Shelf
D Coast

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B Baking soda
C Caustic potash
D Washing soda

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A below 1.5 metres
B above 4 metres
C above 6 metres
D between 1.5 and 2.5 metres

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A Godavari
B Narmada
C Krishna
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A it uses more powerful lances.
B the electrons have more energy than the light particles.
C the velocity of electron is smaller than that of visible light.
D the wavelength of electron is smaller as compared to the wavelength of visible light.

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