Ihe atụ 4 nke ajụjụ ugboro ugboro na oge mkpọtụ
1. Ihe A na-ama jijiji na mkpọtụ 75 kwa sekọnd, ihe B na-ama jijiji na mkpọtụ 60 kwa sekọnd. Oke nke ugboro ole ihe A na ihe B na-eme bụ...
A. 6: 7
B. 5: 4
C. 4: 5
D. 3:5
Mkparịta ụka
Ugboro ugboro bụ ọnụọgụ nke mkpọtụ na-eme kwa sekọnd.
Ugboro nke ihe A = 75/sekọnd = 75 Hertz
Ugboro nke ihe B = 60/sekọnd = 60 Hertz
Oke nke ugboro ole ihe A na ihe B bụ:
75: 60
75/15 : 60/15
5: 4
Azịza ziri ezi bụ B.
2. A na-akpọ ọnụọgụ nke mkpọtụ n'ime otu sekọnd...
A. njupụta
B. ugboro ole
Oge C.
Oge D.
Mkparịta ụka
A na-akpọ ọnụọgụ nke mkpọtụ na-eme n'otu sekọnd ugboro mkpọtụ, ebe a na-akpọ oge achọrọ iji mee otu mkpọtụ.
Azịza ziri ezi bụ B.
3. Isi iyi na-ama jijiji na-emepụta ugboro 20 Hz. Oge nke ịma jijiji ahụ bụ...
A. 20 s
B. 2 s
C. 0,5 s
D. 0,05 s
Mkparịta ụka
A maara na:
Ugboro (f) = 20 Hertz
Ajụrụ: Oge (T)
Azịza:
Ugboro ugboro bụ ọnụọgụ nke mkpọtụ na-eme n'otu sekọnd, ebe oge bụ oge achọrọ iji mee otu mkpọtụ.
T = 1/f
T = 1/20 Hz
T = 0,05 sekọnd
Azịza ziri ezi bụ D.
4. Ọ bụrụ na ihe na-ama jijiji ugboro 600 kwa nkeji ise, mgbe ahụ oge ịma jijiji ahụ bụ...
A. Sekọnd 0,5
B. Sekọnd iri
C. Sekọnd 60
D. sekọnd 120
Mkparịta ụka
A maara na:
Oge (t) = nkeji ise = sekọnd ise x isii = sekọnd atọ
Ọnụọgụ nke mkpọtụ = mkpọtụ 600
Ajụjụ : Oge ịma jijiji (T)
Azịza:
Ugboro (f) nke ịma jijiji bụ ọnụọgụ nke ịma jijiji na-eme n'otu sekọnd, ebe oge (T) nke ịma jijiji bụ oge achọrọ iji mee otu ịma jijiji.
Ugboro ịma jijiji (f) = mkpọtụ 600 / sekọnd 300 = mkpọtụ 2 / sekọnd
Oge ịma jijiji (T) = sekọnd 300 / mkpọtụ 600 = sekọnd 3 / mkpọtụ 6 = sekọnd 1 / mkpọtụ 2 = sekọnd 0,5/mkpọtụ
Azịza ziri ezi bụ A.
Isi mmalite ajụjụ:
Ajụjụ Ule Sayensị Mba nke Ụlọ Akwụkwọ Sekọndrị/Islamic Junior High School Sayensị
