Which of the following colours of light has minimum wavelength? MCQ with Answer and Explanation
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Question #1
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A student measures the length of a pencil as 7.50 cm. The number of significant figures is
Question #2
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The direction of the magnetic field lines around a straight current-carrying conductor can be determined by:
Correct Answer: Option D
Explanation:
Maxwell's Right-Hand Thumb Rule states that if you imagine holding a straight current-carrying conductor in your right hand such that the thumb points in the direction of the current, then the direction in which your fingers wrap around the conductor represents the direction of the circular magnetic field lines.
Maxwell's Right-Hand Thumb Rule states that if you imagine holding a straight current-carrying conductor in your right hand such that the thumb points in the direction of the current, then the direction in which your fingers wrap around the conductor represents the direction of the circular magnetic field lines.
Question #3
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The frequency of a source of sound is 500 Hz. The number of vibrations it makes in 2 minutes is
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