物理试题答案
2023—2024年度高二年级下学期期末考试模拟卷物理参考答案1.A 【解析】氘核是由1个质子和1个中子凭借核力结合在一起的,要把它们分开,需要吸收能量,这个能量就是氘核的结合能,由核反应方程知氘核的结合能为2.19MeV,A项正确;氘核的比结合能为2.19MeV2≈1.10MeV,B项错误;核反应过程中质量数守恒,电荷数守恒,C项错误;氘核质量小于组成它的核子的质量之和,D项错误。2.B 【解析】这束红光通过双缝产生了干涉现象,说明每条缝都很窄,这就满足了这束红光发生明显衍射现象的条件,这束红光形成的干涉图样特点是,中央出现明条纹,两侧对称地出现等间隔的明暗相间条纹;这束红光通过单缝时形成的...
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