تمارين أونلاين Physics || Chapter two “light”

Electromagnetic waves during their propagation in the space are different in

The ratio between the incident angle to the reflecting angle of light is

The normally incident ray on mirror reflects by angle……….

The opposite figure represents two plane mirrors. xy is an incident ray on the first plane mirror. It will reflect to fall towards the second mirror. Find the angle of reflection on the second plane mirror.      

A ray falls on a mirror ( x ) as shown in the figure, the angle of reflection at the mirror y.

In the given figure : The incident ray on mirror ( x ) is parallel to the surface of mirror ( y ) reflects and incident on ( y ) by an angle ……………

in the given figure :

1)The ray which is incident on mirror ( X ) parallel to the surface of ( y ) reflects and lies on ( y ) by an angle of incidence equals ………….….

in the given figure :

The ray reflects from ( y ) and is incident on ( x ) by an angle equals ………

The ratio between the angle of incident of light ray passing through glass where ( n₉ = 1.5 ) to the angle of refraction through water where ( n_w = 1.3 ) is ………

In one medium a wave has a frequency f1 wavelength λ1 and speed c1 the wave passes from this medium into another, where is speed is 2/3 in the second medium the :

a) Frequency is still f₁ and the wavelength is still λ₁

b) Frequency is still f₁ but the wavelength is still 2/3 λ₁

c) Frequency is still f₁ and the wavelength is still 3/2 λ₁

d) Wavelength is still λ₁ but the frequency is 3/2 f₁

e) Wavelength is still λ₁ but the frequency is 2/3 f₁

Light refracts when it transfers from one medium to another due to difference in

When light transfers from denser medium to less dense one the ratio between the angle of incident to the angle of refraction ……..one

A light ray falls on a glass piece so , it refracts inside it. Which of the following concepts does not change when the light ray refracts?

Knowing that absolute refractive index of benzene is 1.5, and absolute refractive index of flint glass ( 1.65 ), then the relative refractive index between benzene and flint glass b ng equals:

The relative refractive index between flint glass benzene bng ( According to the information given in the previous question ) equals:

When a light ray transmits from a less optical dense medium to another of higher optical density and the angle of incidence = zero, which of the following light properties does not change?

If a wave transferred from a medium to another with angle of incidence 60° So, its wavelength is decreased, then refraction angle of the rays would be

An incident ray falls on the surface of water by an incident angle 60°, a part of the incident ray is reflected and other part is refracted and the reflecting and refracting rays are perpendicular to each other. the refractive index in water.