2 Diagram 2 shows the plane wave fronts
produced when water wave moves from region P to region Q. The frequency of
waves is 10 Hz.
Rajah 2 menunjukkan muka gelombang
satah yang terhasil apabila satu gelombang air bergerak dari kawasan P ke kawasan Q. Frekuensi gelombang itu ialah 10
Hz.
(a)
What is the meaning of
wave fronts?
Apakah maksud muka gelombang?
………………………………………………………………………….........………
[1 mark]
[1 markah]
(b) (i) Which
region is deeper?
Kawasan
manakah yang lebih dalam?
..............…………………………………………………………………………
[1 mark]
[1 markah]
(ii) Give
one reason for the answer in 2 (b)(i).
Beri satu
sebab bagi jawapan di 2 (b)(i).
………………………..............…………………………………………………
[1 mark]
[1 markah]
(b) Calculate the speed of waves in region Q.
Hitung laju gelombang di kawasan Q.
[2 marks]
[2 markah]JAWAPAN :
Question
|
Answer
|
Mark
|
2.a
|
The line that joining all points in phase
|
1
|
2.b.i
|
Region P
|
1
|
2.b.ii
|
Wave
length higher/longer // Distance between the two consecutives wave front is
more/bigger
|
1
|
2.c
|
M1 λ
= 0.06 // 0.02
3
M2
v = 10 x 0.02 // 0.2 ms-1
|
1
1
|
Total
|
5
|
2 comments:
Kenapa 2c 0.06 bahagi 3 ,3 dari mana
3 bahagian garisan kawasan Q
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