2024 年“江南十校”新高三第一次综合素质检测物理试题答案
第1页共6页物理答案1.答案:C解析:入射光的频率大于极限频率时,才能产生光电效应,故A、B、D错误;减小入射光的波长即增大频率,有可能会产生光电效应,而形成光电流,故C正确。2.答案:D解析:λ=2m,T=0.4s,v=λ=5m/s。A错误;图2可知,t=0时刻,P点振动方向向y轴正方向,所以在图1中,P点此时向y轴正方向运动,由同侧法,图1简谐横波传播方向为x轴负方向。B选项错误。由图1可知,t=0时刻Q的位移较大,所以此时Q的速度较小。C选项错误;根据波传播的是振动的状态,即将传播到P、Q两点的位移最大的状态分别为M、N两点,有图易得M点的状态会更快传到P,故P比Q先到位移最大。D选项...
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