The critical angle of a material is the angle of incidence for which the angle of refraction is

0^{\circ}

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90^{\circ}

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180^{\circ}

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360^{\circ}

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Solution

The correct option is B $90^{\circ}$
$critical angle : It is the angle of incidence for which angle of refraction is 90∘ .$

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Similar questions

Q. Critical angle for a light ray travelling from denser to rarer medium is defined as the angle of incidence at which the angle of refraction is 90°.
If a ray of light travels from water

(μ_{w})

to air

(μ_{a})

. Find the critical angle?

Critical angle is that angle of incidence in the denser medium for which the angle of refraction in rarer medium is

Q. Critical angle for a light ray travelling from denser to rarer medium is defined as the angle of incidence at which the angle of refraction is 90°.
If a ray of light travels from water

(μ_{w})

to air

(μ_{a})

. Find the critical angle?

The critical angle for a light ray travelling from denser to rarer medium is defined as the angle of incidence at which the light refracts at $90^{\circ}$ (angle of refraction).

If a ray of light travels from water (μ_w) to air (μ_a).

Find the critical angle?

Q. Maximum devation accurs in a homogeneous prism of refracting angle

A_{1}

and having critical angle of its material as

A_{2}

when the angle o incidence is

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The critical angle of a material is the angle of incidence for which the angle of refraction is

The correct option is B 90∘ critical angle : It is the angle of incidence for which angle of refraction is 90∘ .

The correct option is B $90^{\circ}$
$critical angle : It is the angle of incidence for which angle of refraction is 90∘ .$