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Q. It is dangerous to observe Solar eclipse with naked eyes as
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Q. The ozone layer absorbs
Q. Radiocarbon is produced in the atmosphere as a result of
Q. Ultrasonic waves are those waves which
Q. When two similar sources vibrate with slightly different frequencies, a regular rise and fall occurs...
Q. An atomic pile is used for
Q. Blue is what number on the resistor color code?
Q. What Frank Whittle invented?
Q. Radioisotopes are
Q. Optical fiber works on the principle of
Q. Sound waves do not show the phenomenon of
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