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探究平面镜成像 小红同学在做“探究平面镜成像”的实验时,将一块玻璃板竖直架在水平

题型:问答题

题目:

探究平面镜成像

小红同学在做“探究平面镜成像”的实验时,将一块玻璃板竖直架在水平台上,再取两段完全相同的蜡烛A和B,点燃玻璃板前的蜡烛A,进行观察,如图1所示,在此实验中:

(1)小红______用平面镜做实验(填“能”与“不能”),选择______代替平面镜进行实验的好处是______.

(2)所用刻度尺的作用是便于比较______关系.

(3)选取两段蜡烛A和B的要求是______,目的是______关系.

(4)在玻璃板前面放置一支点燃的蜡烛A,再拿一支没有点燃的相同蜡烛B,放在玻璃板后面,调节蜡烛B的位置,直到______,蜡烛B的位置即为蜡烛A的像的位置.有的时候无法让B与蜡烛A的像完全重合.你分析出现这种情况的原因可能是:______.

(5)移去后面的蜡烛B,并在其所在位置上放一光屏,则光屏上______接收到蜡烛烛焰的像(填“能”或“不能”).所以平面镜所成的像是______像(填“虚”或“实”).(或者说如何验证时虚像)

(6)小红将蜡烛逐渐远离玻璃板时,它的像______(填“变大”、“变小”或“不变”).

(7)图乙是他们经过三次实验后,在白纸上记录的像与物对应点的位置.他们下一步应该怎样利用和处理这张“白纸”上的信息得出实验结论.______.

(8)他们发现,旁边一组同学是将玻璃板和蜡烛放在方格纸上进行实验的.你认为选择白纸和方格纸哪种做法更好?说出你的理由:______.

答案:

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参考答案:E

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