Unde mecanice.  Exersare quiz.

Unde mecanice. Exersare quiz.

11th Grade

9 Qs

quiz-placeholder

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Unde mecanice.  Exersare quiz.

Unde mecanice. Exersare quiz.

Assessment

Quiz

Physics

11th Grade

Practice Problem

Hard

Created by

Silviu Chiriac

Used 10+ times

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9 questions

Show all answers

1.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Propagarea unei perturbatii intr-un mediu se numeste ........

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Locul geometric al punctelor care oscileaza in faza se numeste:

front de unda

suprafata de unda

val

numar de unda

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Lungimea de unda reprezinta drumul parcurs de unda in timp de:

o secunda

un minut

o perioada

o faza

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Despre undele transversale se poate spune:

viteza lor depinde de densitatea mediului

punctele mediului au directia de oscilatie perpendiculara pe directia de propagare

punctele mediului au directia de oscilatie paralela cu directia de propagare

punctele mediului nu oscileaza

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Care este expresia corecta a ecuatiei undei plane?

 

 y(x,t)=A sin 2π(Ttxλ)y\left(x,t\right)=A\ \sin\ 2\pi\left(\frac{T}{t}-\frac{x}{\lambda}\right)  

 y\left(x,t\right)=A\ \sin\ 2\pi\left(\frac{t}{T}-\frac{\lambda}{x}\right)  

 y(x,t)=A sin 2π(tTxλ)y\left(x,t\right)=A\ \sin\ 2\pi\left(\frac{t}{T}-\frac{x}{\lambda}\right)  

 y(x,t)=A sin2π(Ttλx)y\left(x,t\right)=A\ \sin2\pi\left(\frac{T}{t}-\frac{\lambda}{x}\right)  

6.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Reflexia fara schimbare de faza se face pe un capat ...............

7.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Reflexia cu schimbare de faza de

 π\pi rad se face la un capat ..........

8.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Marimea

 ϕ=ωtkx\phi=\omega t-kx  corespunde marimii fizice:

perioada

diferenta de faza

diferenta de drum

faza

9.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Diferenta de faza atunci cand diferenta de drum dintre 2 puncte aflate in oscilatie este jumatate de lungime de unda are valoarea:

2π rad2\pi\ rad

π rad\pi\ rad

π2 rad\frac{\pi}{2}\ rad

π4 rad\frac{\pi}{4}\ rad