本课配套习题挑战模式1/5
放映幻灯时,幻灯片与镜头间距离u跟镜头焦距f的关系是( )
A: u < f |
B: u = 2f |
C: u > 2f |
D: f < u < 2f |
- 提示1:PHA+5bm754Gv54mH5LiO6ZWc5aS06Ze06Led56a75Li654mp6Led77yM55SodeihqOekujwvcD4=
- 提示2:PHA+5oqV5b2x5Luq5oiQ5YOP54mp6Led5bqU6K+l5Zyo5LiA5YCN54Sm6Led5LiO5LqM5YCN54Sm6Led5LmL6Ze077yM5Y2zIGYgJmx0OyB1ICZsdDsgMmY8L3A+
- 答案:RA==
PGRpdj7lubvnga/niYfkuI7plZzlpLTpl7Tot53nprvkuLrnianot53vvIznlKh16KGo56S677yM5oqV5b2x5Luq5oiQ5YOP54mp6Led5bqU6K+l5Zyo5LiA5YCN54Sm6Led5LiO5LqM5YCN54Sm6Led5LmL6Ze077yM5Y2zIGYgJmx0OyB1ICZsdDsgMmbjgIJE56ym5ZCI6aKY5oSP77yM6YCJ5oupROmAiemhueOAgjwvZGl2Pg==
本课配套习题挑战模式2/5
关于放大镜,下列说法中正确的是( )
A: 焦距较短凸透镜 |
B: 焦距可以调节的凸透镜 |
C: 焦距较长的凸透镜 |
D: 当物体放在焦点以内,凸透镜就可能当放大镜使用 |
- 提示1:PHA+5pS+5aSn6ZWc5piv5Ye46YCP6ZWc55qE5bqU55So77yM5b2T5Ye46YCP6ZWc56Gu5a6a5Lul5ZCO77yM54Sm6Led5Lmf5bCx56Gu5a6a5LqGPGJyPjwvcD4=
- 提示2:PHA+5b2T54mp6Led5Zyo5LiA5YCN54Sm6Led5LmL5YaF5pe277yM5oiQ5q2j56uL5pS+5aSn55qE6Jma5YOP77yM5Lmf5bCx5piv5pS+5aSn6ZWcPGJyPjwvcD4=
- 答案:RA==
PGRpdj7mlL7lpKfplZzmmK/lh7jpgI/plZznmoTlupTnlKjvvIzlvZPlh7jpgI/plZznoa7lrprku6XlkI7vvIznhKbot53kuZ/lsLHnoa7lrprkuobvvIzliJlC6YCJ6aG56ZSZ6K+v77yM5b2T54mp6Led5Zyo5LiA5YCN54Sm6Led5LmL5YaF5pe277yM5bCx5Y+v5Lul5oiQ5q2j56uL5pS+5aSn55qE6Jma5YOP77yM5Lmf5bCx5piv5pS+5aSn6ZWc77yMQUPplJnor6/vvIxE5q2j56GuPGJyPjwvZGl2Pg==
本课配套习题挑战模式3/5
用焦距一定的照相机来照相,欲使照片上的景物的像大些,所采用的方法可以是( )
A: 照相机离景物近些 |
B: 照相机离景物近些,并使像距调大些 |
C: 照相机离景物远些 |
D: 照相机离景物远些,并使像距调大些 |
- 提示1:PHA+54Wn55u45py655qE6ZWc5aS055u45b2T5LqO5Ye46YCP6ZWcPC9wPg==
- 提示2:PHA+5Ye46YCP6ZWc5oiQ5YOP5Y6f55CG77ya54mp6L+R5YOP6L+c5YOP5Y+Y5aSnPC9wPg==
- 答案:Qg==
PGRpdj7nhafnm7jmnLrnmoTplZzlpLTnm7jlvZPkuo7lh7jpgI/plZzvvIzmoLnmja7lh7jpgI/plZzmiJDlg4/ljp/nkIbvvJrnianov5Hlg4/ov5zlg4/lj5jlpKfjgILmg7Porqnlg4/lj5jlpKfvvIzlupTor6Xkvb/nianot53lh4/lsI/vvIznm7jot53lj5jlpKfvvIzliJlC6YCJ6aG55q2j56GuPC9kaXY+
本课配套习题挑战模式4/5
在拍摄一幢建筑物时,已调节好相机的距离,突然从取景框中发现建筑物上左右两个屋角都没有在框内,要拍摄一张完整的像,则需要( )
A: 只要调节相机暗箱的长度 |
B: 只要将相机向后移动一段距离即可 |
C: 将相机向后移动,暗箱缩短一些 |
D: 将相机向后移动,暗箱长度略微增大一些 |
- 提示1:PHA+54Wn55u45py65piv5Ye46YCP6ZWc55qE5bqU55SoPGJyPjwvcD4=
- 提示2:PHA+5Ye46YCP6ZWc5oiQ5a6e5YOP55qE6KeE5b6L77ya54mp6L+R5YOP6L+c5YOP5Y+Y5aSn77yM54mp6L+c5YOP6L+R5YOP5Y+Y5bCPPGJyPjwvcD4=
- 答案:Qw==
PGRpdj7msqHmnInlrozlhajlj5bmma/mmK/lm6DkuLrlg4/lpKrlpKfvvIzopoHmg7PlsIblg4/lj5jlsI/vvIzopoHmmK/nianot53lj5jlpKfvvIzlg4/ot53lj5jlsI/vvIzliJlD5q2j56GuPGJyPjwvZGl2Pg==
本课配套习题挑战模式5/5
生活中很多光学器件含有透镜,下列光学器件中关于透镜的说法正确的是( )
A: 教学用的投影仪利用凸透镜成正立放大的实像 |
B: 放大镜利用的是凸透镜成像时,物距在二倍焦距以外,成正立放大的虚像 |
C: 照相机中“调焦环”的作用是调节凸透镜焦距的大小 |
D: 照相机的调焦是指调节镜头和胶片的距离,也就是调节像距大小 |
- 提示1:PHA+5oqV5b2x5Luq5Yip55So55qE5piv5Ye46YCP6ZWc5oiQ5YOP5pe277yaZu+8nHXvvJwyZu+8jOaIkOWAkueri+aUvuWkp+eahOWunuWDjzxicj48L3A+
- 提示2:PHA+5pS+5aSn6ZWc5Yip55So55qE5piv5Ye46YCP6ZWc5oiQ5YOP5pe277yM54mp6Led5Zyo5LiA5YCN54Sm6Led5Lul5YaF77yM5oiQ5q2j56uL5pS+5aSn55qE6Jma5YOPPGJyPjwvcD4=
- 提示3:PHA+54Wn55u45py655qE6LCD54Sm5piv5oyH6LCD6IqC6ZWc5aS05ZKM6IO254mH55qE6Led56a777yM5Lmf5bCx5piv6LCD6IqC5YOP6Led5aSn5bCPPGJyPjwvcD4=
- 答案:RA==
PGRpdj7mipXlvbHku6rliKnnlKjnmoTmmK/lh7jpgI/plZzmiJDlgJLnq4vmlL7lpKfnmoTlrp7lg4/vvIzliJlB6K+05rOV5LiN5q2j56Gu77yb5pS+5aSn6ZWc5Yip55So55qE5piv5Ye46YCP6ZWc5oiQ5YOP5pe277yM54mp6Led5Zyo5LiA5YCN54Sm6Led5Lul5YaF77yM5oiQ5q2j56uL5pS+5aSn55qE6Jma5YOP77yM5YiZQuS4jeato+ehru+8m+eFp+ebuOacuueahOiwg+eEpuaYr+aMh+iwg+iKgumVnOWktOWSjOiDtueJh+eahOi3neemu++8jOS5n+WwseaYr+iwg+iKguWDj+i3neWkp+Wwj++8jOWImUPplJnor6/vvIxE6K+05rOV5q2j56Gu77yb6YCJ5oupROmAiemhueOAgjxicj48L2Rpdj4=