題目列表(包括答案和解析)
如圖所示,兩個(gè)完全相同的波源在介質(zhì)中形成的波相疊加而發(fā)生的干涉的示意圖,實(shí)線表示波峰,虛線表示波谷,則( )
(A)A點(diǎn)為振動(dòng)加強(qiáng)點(diǎn),經(jīng)過半個(gè)周期,這一點(diǎn)變?yōu)檎駝?dòng)減弱點(diǎn)
(B)B點(diǎn)為振動(dòng)減弱點(diǎn),經(jīng)過半個(gè)周期,這一點(diǎn)變?yōu)檎駝?dòng)加強(qiáng)點(diǎn)
(C)C點(diǎn)可能為振動(dòng)加強(qiáng)點(diǎn),可能為振動(dòng)減弱點(diǎn)
(D)D點(diǎn)為振動(dòng)減弱點(diǎn),經(jīng)過半個(gè)周期,這一點(diǎn)振動(dòng)仍減弱
A.A點(diǎn)為振動(dòng)加強(qiáng)點(diǎn),經(jīng)過半個(gè)周期,這一點(diǎn)振動(dòng)減弱 |
B.B點(diǎn)為振動(dòng)減弱點(diǎn),經(jīng)過半個(gè)周期,這一點(diǎn)振動(dòng)加強(qiáng) |
C.C點(diǎn)為振動(dòng)加強(qiáng)點(diǎn),經(jīng)過半個(gè)周期,這一點(diǎn)振動(dòng)仍加強(qiáng) |
D.D點(diǎn)為振動(dòng)減弱點(diǎn),經(jīng)過半個(gè)周期,這一點(diǎn)振動(dòng)加強(qiáng) |
A.A點(diǎn)為振動(dòng)加強(qiáng)點(diǎn),經(jīng)過半個(gè)周期,這一點(diǎn)變?yōu)檎駝?dòng)減弱點(diǎn) |
B.B點(diǎn)為振動(dòng)減弱點(diǎn),經(jīng)過半個(gè)周期,這一點(diǎn)變?yōu)檎駝?dòng)加強(qiáng)點(diǎn) |
C.C點(diǎn)可能為振動(dòng)加強(qiáng)點(diǎn),可能為振動(dòng)減弱點(diǎn) |
D.D點(diǎn)為振動(dòng)減弱點(diǎn),經(jīng)過半個(gè)周期,這一點(diǎn)振動(dòng)仍減弱 |
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