1990年安徽高考物理真题及答案
1990年安徽高考物理真题及答案一、选择题:本大题共13小题;每小题2分,共26分.在每小题给出的四个选项中,只有一项是正确的.把正确选项前的字母填在题后方括号内.(1)第一个发现电磁感应现象的科学家是(A)奥斯特(B)库仑(C)法拉第(D)安培()(2)一物体在某行星表面受到的万有引力是它在地球表面受到的万有引力的1/4.在地球上走得很准的摆钟搬到此行星上后,此钟的分针走一整圈所经历的时间实际上是(A)1/4小时(B)1/2小时(C)2小时(D)4小时()(3)用绿光照射一光电管,能产生光电效应.欲使光电子从阴极逸出时的最大初动能增大,应(A)改用红光照射(B)增大绿光的强度(C)增大光电管...
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