波长为l0、频率为n0的声波折射进入到另一种媒质中,声波在该媒质中的速度是原来的2倍,则声波在该媒质中的波长l和频率n分别为
A: l=l0,n=n0.
B: l=l0/2,n=n0.
C: l=2l0,n=n0.
D: l=l0,n=2n0.
A: l=l0,n=n0.
B: l=l0/2,n=n0.
C: l=2l0,n=n0.
D: l=l0,n=2n0.
C
举一反三
- 在下列六组量子数中,正确的是① n=3,l= 1,m=-1 ② n = 3,l= 0,m = 0 ③ n = 2,l= 2 ,m=-1 ④ n = 2, l = 1 ,m = 0 ⑤ n = 2,l = 0,m =-1 ⑥ n= 2,l = 3 , m= 2 A: ①、③、⑤ B: ②、④、⑥ C: ①、②、③ D: ①、②、④
- 表述y(4dz2)的n、l、m是( )。 A: n=4,l=0,m=0; B: n=4,l=2,m=0; C: n=4,l=1,m=0; D: n=3,l=2,m=0。
- 中国大学MOOC: 在下列六组量子数中,正确的是① n=3,l= 1,m=-1 ② n = 3,l= 0,m = 0 ③ n = 2,l= 2 ,m=-1 ④ n = 2, l = 1 ,m = 0 ⑤ n = 2,l = 0,m =-1 ⑥ n= 2,l = 3 , m= 2
- 下列量子数合理的是? n = 1,l = 0,m = 0|n = l,l = 1,m = 1|;n = 2,l = 0,m = 1 |n = 2,l = 2,m = 2
- 多电子原子中,能量最高的原子轨道是 A: n = 3,l = 2 B: n = 4,l = 0 C: n = 2,l = 0 D: n = 1,l = 0
内容
- 0
多电子原子中,能量最高的轨道是 A: n = 1,l = 0 B: n = 2,l = 0 C: n = 4,l = 0 D: n = 3,l = 2
- 1
下列量子数合理的是 。 A: n = 2,l = 0,m = 1 B: n = l,l = 1,m = 1 C: n = 2,l = 2,m = 2 D: n = 1,l = 0,m = 0
- 2
下列量子数合理的是 A: n = 2,l = 0,m = 1 B: n = l,l = 1,m = 1 C: n = 2,l = 2,m = 2 D: n = 1,l = 0,m = 0
- 3
下列各组量子数中正确的是? n = 2,l = 0,m = -1|n = 2,l = 2,m = 0|n = 3,l = 1,m = -1|;n = 2,l = 3,m = 0
- 4
下列各组量子数中正确的是 A: n = 3,l = 1,m = -1 B: n = 2,l = 2,m = 0 C: n = 2,l = 0,m = -1 D: n = 2,l = 3,m = 0 E: n = 1,l = 2,m = 1 F: n = 4,l = 0,m =1