Optics & Light

According to the law of reflection, the angle of incidence equals ...

The bending of light's direction when crossing the boundary of two different media is called ...

Snell's law of refraction is written as ...

The speed of light in a vacuum is about ...

Total internal reflection occurs when light travels from a ...

A concave mirror is called a converging mirror because it ...

Light comes from air ($n_1=1$) into a medium with $n_2=\sqrt{2}$ at an incidence angle of $45^{\circ }$. The angle of refraction is ...

The critical angle for light going from a medium of refractive index $1.5$ into air is about ...

An object is placed $15\text{cm}$ in front of a concave mirror of focal length $10\text{cm}$. The image distance and magnification are ...

When light moves from air into water, the quantity that stays the same is ...

An object is placed $30\text{cm}$ in front of a convex lens of focal length $20\text{cm}$. The image distance is ...

Light of wavelength $600\text{nm}$ in air enters water ($n=1.5$). Its wavelength in water is ...

An object is placed between the focal point and a concave mirror. The image formed is ...

Visible light has a wavelength of $600\text{nm}$. Its frequency is ... ($c=3\times 10^8\text{m/s}$)

Light travels in glass of refractive index $1.5$. Its speed in glass is ... ($c=3\times 10^8\text{m/s}$)

Light travels from glass ($n_1=1.5$) into water ($n_2=1.33$) at an incidence angle of $30^{\circ }$. The angle of refraction is about ...

A pool is actually $1.2\text{m}$ deep and the refractive index of water is $1.5$. The apparent depth is ...

In a double-slit experiment, the slit separation is $0.4\text{mm}$, the screen distance is $1\text{m}$, and the spacing of adjacent bright fringes is $1\text{mm}$. The wavelength used is ...

An object $4\text{cm}$ high is placed $20\text{cm}$ in front of a concave mirror of focal length $15\text{cm}$. The image height is ...

The critical angle of a medium with refractive index $1.25$ relative to air is ...