A concave mirror forms a real, inverted, magnified image when object is MCQ with Answer and Explanation
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Question #1
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A sound wave has time period 0.01 s. Its frequency is
Question #2
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Significant figures in 0.004050:
Correct Answer: Option A
Explanation:
Rules: leading zeros not significant; trailing zero after decimal is significant. Digits 4,0,5,0 are significant ⇒ 4 sig figs. Memory tip: 'Start at first non-zero; include trailing zeros after decimal'. Measurement precision concept frequently tested in competitive exams.
Rules: leading zeros not significant; trailing zero after decimal is significant. Digits 4,0,5,0 are significant ⇒ 4 sig figs. Memory tip: 'Start at first non-zero; include trailing zeros after decimal'. Measurement precision concept frequently tested in competitive exams.
Question #3
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The image formed by a concave lens is always
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