physics exam 2sec الاختبار الاسترشادى 2021

• wave length increase -velocity increase

• wave length decrease-velocity increase

• wave length increase-velocity decrease

• wave length decrease-velocity decrease

• $\frac{3}{2}\lambda$
  

• $\frac{2}{3}\lambda$

• $2\lambda$

• $\lambda$

• distance KL -distance mn

• half distance KL- double distance mn

• double distance KL-distance mn

• half distance kl-half distance mn

• 3/4

• 4/3

• 6/4

• 1/3

• 4

• 3

• 2

• 5

• 0.5

• 0.6

• 1

• 2

A light ray falls with angle 45 on one side of triangular prism its apex angle 30 and emerge normally from the opposite side ,so the angle of deviation =...........

• 15

• 20

• 25

• 30

• jar1

• jar2

• jar3

• jar4

• 16v

• 4v

• 1/4 v

• 1/16 v

A wave its frequency 100Hz propagates in air with velocity of 320m/s calculate its wavelength ?

• 1.6m

• 3.2m

• 32000m

• 420m