Two forces 3 N and 4 N act at right angles. Resultant magnitude is: MCQ with Answer and Explanation
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Question #1
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The scientist who invented the electric generator is
Question #2
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Dispersion of white light through a prism occurs because
Correct Answer: Option C
Explanation:
Dispersion is splitting of light into constituent colours due to variation of refractive index with wavelength. Violet deviates most, red least. Prism doesn't absorb but disperses. Rainbow formation is due to dispersion, refraction, reflection in water droplets.
Dispersion is splitting of light into constituent colours due to variation of refractive index with wavelength. Violet deviates most, red least. Prism doesn't absorb but disperses. Rainbow formation is due to dispersion, refraction, reflection in water droplets.
Question #3
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In a nuclear reaction, mass defect refers to:
Correct Answer: Option B
Explanation:
In nuclear reactions, the total mass of the products is slightly less than the total mass of the original reacting nuclei. This missing mass is known as the 'mass defect'. According to Einstein's mass-energy equivalence principle (E = mc²), this tiny amount of missing mass is converted into the tremendous energy released during the reaction.
In nuclear reactions, the total mass of the products is slightly less than the total mass of the original reacting nuclei. This missing mass is known as the 'mass defect'. According to Einstein's mass-energy equivalence principle (E = mc²), this tiny amount of missing mass is converted into the tremendous energy released during the reaction.
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