Critical angle is minimum when a light ray passes which thing?

Critical angle is minimum when a light ray passes which thing?
by

1 Answer

Answer :

Glass to air
by

Related questions

The minimum angle of incidence at which the light ray may strike the interface of two media and result in an angle of refraction of 90 degrees or greater. ∙ A. optimum angle ∙ B. angle of refraction ∙ C. refracted angle ∙ D. critical angle

Description : The minimum angle of incidence at which the light ray may strike the interface of two media and result in an angle of refraction of 90 degrees or greater. ∙ A. optimum angle ∙ B. angle of refraction ∙ C. refracted angle ∙ D. critical angle

Last Answer : D. critical angle

Assume that a ray of light passes from glass into air at an angle of incidence greater than zero degrees. Will the ray of light be bent toward or away from the normal as it passes into the air?

Description : Assume that a ray of light passes from glass into air at an angle of incidence greater than zero degrees. Will the ray of light be bent toward or away from the normal as it passes into the air?

Last Answer : ANSWER: AWAY FROM

A light ray travelling from denser to rarer medium at an angle of incidence more than critical angle of concerned media pair suffers. (1) reflection (2) refraction (3) diffraction (4) total internal reflection

Description : A light ray travelling from denser to rarer medium at an angle of incidence more than critical angle of concerned media pair suffers. (1) reflection (2) refraction (3) diffraction (4) total internal reflection

Last Answer : (4) total internal reflection Explanation: If the angle of incidence of light ray in the denser medium is greater than the critical angle of the concerned media pair, the light is not at all reflected in to the rarer medium but is totally reflected. This is known as 'total internal reflection'.

Total internal reflection takes place if the light ray strikes the interface at an angle with what relationship to the critical angle? a. Less than b. Grater than c. Equal to d. Zero

Description : Total internal reflection takes place if the light ray strikes the interface at an angle with what relationship to the critical angle? a. Less than b. Grater than c. Equal to d. Zero

Last Answer : b. Grater than

Total internal reflection takes place if the light ray strikes the interface at an angle with what relationship to the critical angle? ∙ A. less than ∙ B. greater than ∙ C. equal to ∙ D. zero

Description : Total internal reflection takes place if the light ray strikes the interface at an angle with what relationship to the critical angle? ∙ A. less than ∙ B. greater than ∙ C. equal to ∙ D. zero

Last Answer : ∙ B. greater than

Total internal reflection takes place if the light ray strikes the interface at an angle with what relationship to the critical angle? ∙ a. Less than ∙ b. Grater than ∙ c. Equal to ∙ d. Zer

Description : Total internal reflection takes place if the light ray strikes the interface at an angle with what relationship to the critical angle? ∙ a. Less than ∙ b. Grater than ∙ c. Equal to ∙ d. Zer

Last Answer : ∙ b. Grater than

A light ray traveling from glass into air strikes the glass-air surface at an angle 50 degrees to the normal. If the critical angle for the glass-air combination is 42 degrees, the percentage of light reflected from the surface is w) 6 x) 25 y) 38 z) 100

Description : A light ray traveling from glass into air strikes the glass-air surface at an angle 50 degrees to the normal. If the critical angle for the glass-air combination is 42 degrees, the percentage of light reflected from the surface is w) 6 x) 25 y) 38 z) 100

Last Answer : ANSWER: Z -- 100

A light ray traveling in benzene strikes the benzene-air surface at the critical angle. The angle of refraction of the light ray is: w) 30 degrees x) 60 degrees y) 90 degrees z) 180 degrees

Description : A light ray traveling in benzene strikes the benzene-air surface at the critical angle. The angle of refraction of the light ray is: w) 30 degrees x) 60 degrees y) 90 degrees z) 180 degrees

Last Answer : ANSWER: Y -- 90 DEGREES

A light ray travelling from denser to rarer medium at an angle of incidence more than critical angle of concerned media pair suffers. (1) reflection (2) refraction (3) diffraction (4) total internal reflection

Description : A light ray travelling from denser to rarer medium at an angle of incidence more than critical angle of concerned media pair suffers. (1) reflection (2) refraction (3) diffraction (4) total internal reflection

Last Answer :  total internal reflection

Critical angle of light passing from glass to water is minimum for which colour?

Description : Critical angle of light passing from glass to water is minimum for which colour?

Last Answer : Violet colour

1. Critical angle of. light passing from glass to water is minimum for which colour? 2. With whose assistance was Bokaro Steel Limited established? 3. Where were the xxvii (1996) Summer Olympic games were held? 4. Why was Farakka Barrage commissioned? 5. In the Sultanate period, which was the highest rural authority for land revenue?

Description : 1. Critical angle of. light passing from glass to water is minimum for which colour? 2. With whose assistance was Bokaro Steel Limited established? 3. Where were the xxvii (1996) Summer Olympic games ... can be drawn on the earth's surface passes through where? 20. By whom was Zero invented?

Last Answer : Answer : 1. Violet colour 2. Soviet Union 3. Atlanta 4. Save Kolkata port 5. Chowdhary 6. 10% 7. Governor-General 8. 2CaSO4 .H2 O 9. Atlantic ocean 10. Caste system 11. Football 12. Excise duties ... . Government of India Act, 1858 17. Air 18. Sri Sri Ravi Shankar 19. Equator 20. An unknown Indian 

As shown in Fig. `PQ` is a ray incident on prism `ABC`. Show the corresponding refracted and emergent rays. The critical angle for the material of the

Description : As shown in Fig. `PQ` is a ray incident on prism `ABC`. Show the corresponding refracted and emergent rays. The critical angle for the material of the

Last Answer : As shown in Fig. `PQ` is a ray incident on prism `ABC`. Show the corresponding refracted and ... is refractive index of the material of prism ? .

When a ray of light passes through a prism,

Description : When a ray of light passes through a prism,

Last Answer : When a ray of light passes through a prism, A. the deviation of red light is maximum. B. the ... blue light is maximum. D. all rays deviate equally.

A ray of light incident at `49^(@)` on the face of an equilaternal prism passes symmetrically. Calculate the refractive index of the material of the p

Description : A ray of light incident at `49^(@)` on the face of an equilaternal prism passes symmetrically. Calculate the refractive index of the material of the p

Last Answer : A ray of light incident at `49^(@)` on the face of an equilaternal prism passes symmetrically. ... the refractive index of the material of the prism.

When white light passes through a glass prism we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is - (1) the violet ray (2) the red ray (3) the green ray (4) the blue ray

Description : When white light passes through a glass prism we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is - (1) the violet ray (2) the red ray (3) the green ray (4) the blue ray

Last Answer : (2) the red ray Explanation: Red is deviated the least and violet the most.

A ray of light starting from air passes through medium A of refractive index 1.50, enters medium B of refractive index 1.33 and finally enters medium C of refractive index 2.42. If this ray emerges out in air from C, then for which of the following pairs of media the bending of light least? (a) air-A (b) A-B (c) B-C (d) C-air

Description : A ray of light starting from air passes through medium A of refractive index 1.50, enters medium B of refractive index 1.33 and finally enters medium C of refractive index 2.42. If this ray emerges out in air from C, then ... of media the bending of light least? (a) air-A (b) A-B (c) B-C (d) C-air

Last Answer : Answer : (b)

When light enters an optically denser medium, the light ray: w) bends away from a normal to surface x) passes through unbent y) bends towards a normal to surface z) none of the above

Description : When light enters an optically denser medium, the light ray: w) bends away from a normal to surface x) passes through unbent y) bends towards a normal to surface z) none of the above

Last Answer : ANSWER: Y -- BENDS TOWARDS A NORMAL TO SURFACE

When a ray passes through a prism ______. A. It goes undeviated B. It remain parallel to a base C. It bends towards the base D. None

Description : When a ray passes through a prism ______. A. It goes undeviated B. It remain parallel to a base C. It bends towards the base D. None

Last Answer : C. It bends towards the base

147 A ray directed towards the centre of curvature of a spherical mirror a) become parallel to principal axis b)retraces its path c)appears to diverge from focus d)passes through focus.

Description : 147 A ray directed towards the centre of curvature of a spherical mirror a) become parallel to principal axis b)retraces its path c)appears to diverge from focus d)passes through focus.

Last Answer : b)retraces its path

A light ray is incident on a plane mirror placed in a horizontal plane, making an angle of `30^(@)` with the vertical, then the angle between the refl

Description : A light ray is incident on a plane mirror placed in a horizontal plane, making an angle of `30^(@)` with the vertical, then the angle between the refl

Last Answer : A light ray is incident on a plane mirror placed in a horizontal plane, making an angle of `30^(@)` with the vertical, ... @)` C. `90^(@)` D. `30^(@)`

A ray of light is incident at an angle of `60^(@)` on one face of a prism of angle `30^(@)`. The ray emerging out of the prism makes an angle of `30^(

Description : A ray of light is incident at an angle of `60^(@)` on one face of a prism of angle `30^(@)`. The ray emerging out of the prism makes an angle of `30^(

Last Answer : A ray of light is incident at an angle of `60^(@)` on one face of a prism of angle `30^(@)` ... of `30^(@)` with the incident ray. The emergent ray is

A ray of light is inclined to one face of a prism at an angle of `60^@`. If angle of prism is `60^@` and the ray deviated through an angle of `42^@` f

Description : A ray of light is inclined to one face of a prism at an angle of `60^@`. If angle of prism is `60^@` and the ray deviated through an angle of `42^@` f

Last Answer : A ray of light is inclined to one face of a prism at an angle of `60^@`. If angle of ... which the emergent ray makes with second face of the prism.

A ray of light suffers a deviation of `3.2^(@)` on passing through a thin prism of angle `5^(@)`. What is the refractive index of the material of the

Description : A ray of light suffers a deviation of `3.2^(@)` on passing through a thin prism of angle `5^(@)`. What is the refractive index of the material of the

Last Answer : A ray of light suffers a deviation of `3.2^(@)` on passing through a thin prism of angle ` ... is the refractive index of the material of the prism ?

A ray of light is incident on the glass prism at an angle of `40^(@)`. Find the angle of emergence, if the angle of prism is `60^(@)` and refractive i

Description : A ray of light is incident on the glass prism at an angle of `40^(@)`. Find the angle of emergence, if the angle of prism is `60^(@)` and refractive i

Last Answer : A ray of light is incident on the glass prism at an angle of `40^(@)`. Find the angle of emergence, ... prism is `60^(@)` and refractive index is 1.5.

A ray of light falls on a normally on a refracting face of a prism. Find the angle of prism if the ray just fails to emerge from the prism `(mu=3//2).

Description : A ray of light falls on a normally on a refracting face of a prism. Find the angle of prism if the ray just fails to emerge from the prism `(mu=3//2).

Last Answer : A ray of light falls on a normally on a refracting face of a prism. Find the angle of prism if the ray ... fails to emerge from the prism `(mu=3//2).`

Find the maximum angle of refraction when a light ray is refracted from glass `(mu= 1.50)` to air.

Description : Find the maximum angle of refraction when a light ray is refracted from glass `(mu= 1.50)` to air.

Last Answer : Find the maximum angle of refraction when a light ray is refracted from glass `(mu= 1.50)` to air.

What does the law of reflection tell us about the angle of a reflected ray of light?

Description : What does the law of reflection tell us about the angle of a reflected ray of light?

Last Answer : The law of reflection states that a light ray will reflect at the same angle that it hits a surface. We can use this law to guide light to different targets!

The refractive index of the material of a glass prism depends upon (a) The angle of the prism (b) The intensity of the incident light ray (c) The colour of the incident light ray (d) Size of the prism

Description : The refractive index of the material of a glass prism depends upon (a) The angle of the prism (b) The intensity of the incident light ray (c) The colour of the incident light ray (d) Size of the prism

Last Answer : Ans:(c)

In the following diagram, the path of a ray of light passing through a glass prism is shown: In this diagram the angle of incidence, the angle of emergence and the angle of deviation respectively are (select the correct option): (a) X, R and T (b) Y, Q and T (c) X, Q and P (d) Y, Q and P

Description : In the following diagram, the path of a ray of light passing through a glass prism is shown: In this diagram the angle of incidence, the angle of emergence and the angle of deviation respectively are (select the correct option): (a) X, R and T (b) Y, Q and T (c) X, Q and P (d) Y, Q and P

Last Answer : (d) Y, Q and P

A light ray incident on the optical fiber core is propagated along the fiber. Is the angle of incidence of the light ray entering the fiber larger or smaller than the acceptance angle

Description : A light ray incident on the optical fiber core is propagated along the fiber. Is the angle of incidence of the light ray entering the fiber larger or smaller than the acceptance angle

Last Answer : Smaller.

A beam of light is incident on a perfectly smooth body of water. The angle that the REFLECTED ray makes with the normal is: w) greater than x) smaller than y) the same as the angle the incident ray makes with the normal.

Description : A beam of light is incident on a perfectly smooth body of water. The angle that the REFLECTED ray makes with the normal is: w) greater than x) smaller than y) the same as the angle the incident ray makes with the normal.

Last Answer : ANSWER: Y -- THE SAME AS

Assume a ray of light is incident on a smooth reflecting surface at an angle of incidence of 15 degrees to the normal. What is the angle between the incident ray and the reflected ray?

Description : Assume a ray of light is incident on a smooth reflecting surface at an angle of incidence of 15 degrees to the normal. What is the angle between the incident ray and the reflected ray?

Last Answer : ANSWER: 30 DEGREES

When theangle of incidenceis _______ the critical angle, the light beam bends along the interface. A) more than B) less than C) equal to D) none of the above

Description : When theangle of incidenceis _______ the critical angle, the light beam bends along the interface. A) more than B) less than C) equal to D) none of the above

Last Answer : equal to

When a beam of light travels through media of two different densities, if theangle of incidence isgreater than the critical angle, _______ occurs. A) reflection B) refraction C) incidence D) criticism

Description : When a beam of light travels through media of two different densities, if theangle of incidence isgreater than the critical angle, _______ occurs. A) reflection B) refraction C) incidence D) criticism

Last Answer : reflection

The maximum angle in which external light rays may strike the air/glass interface and still propagate down the fiber. ∙ A. Acceptance cone half-angle ∙ B. Acceptance cone ∙ C. Critical angle ∙ D. Angle of incidence

Description : The maximum angle in which external light rays may strike the air/glass interface and still propagate down the fiber. ∙ A. Acceptance cone half-angle ∙ B. Acceptance cone ∙ C. Critical angle ∙ D. Angle of incidence

Last Answer : A. Acceptance cone half-angle

The term critical angle describes ∙ A. the point at which light is refracted ∙ B. the point at which light becomes invisible ∙ C. the point at which light has gone from the refractive mode to the reflective mode ∙ D. the point at which light has crossed the boundary layers from one index to another

Description : The term critical angle describes ∙ A. the point at which light is refracted ∙ B. the point at which light becomes invisible ∙ C. the point at which light has gone from the refractive mode ... reflective mode ∙ D. the point at which light has crossed the boundary layers from one index to another

Last Answer : C. the point at which light has gone from the refractive mode to the reflective mode ∙

On a rainy day, small oil films on water show brilliant colors'. This is due to A. dispersion B. interference C. diffraction D. Polarization 49.The critical angle for a beam of light passing from water into air is 48.8 °. This means that all light rays with an angle of incidence greater than this angle will be A. absorbed B. totally reflected C. Partially reflected and partially transmitted D. Totally transmitted

Description : On a rainy day, small oil films on water show brilliant colors'. This is due to A. dispersion B. interference C. diffraction D. Polarization 49.The critical angle for a beam of light ... A. absorbed B. totally reflected C. Partially reflected and partially transmitted D. Totally transmitted

Last Answer : C. Partially reflected and partially transmitted

In order for fiber optics to work, the incident light inside the fiber must hit the wall of the fiber at: w) 90 degrees x) 45 degrees y) an angle greater than the critical angle z) none of the above

Description : In order for fiber optics to work, the incident light inside the fiber must hit the wall of the fiber at: w) 90 degrees x) 45 degrees y) an angle greater than the critical angle z) none of the above

Last Answer : ANSWER: Y -- AN ANGLE GREATER THAN THE CRITICAL ANGLE 

Optical fiber uses reflection to guide light through a channel, in which angle of incidence is ................. the critical angle. (A) equal to (B) less than (C) greater than (D) less than or equal to

Description : Optical fiber uses reflection to guide light through a channel, in which angle of incidence is ................. the critical angle. (A) equal to (B) less than (C) greater than (D) less than or equal to

Last Answer : (C) greater than

A thin glass prism placed in air produces minimum deviation of `4^(@)` in a light ray. If the prism is immersed in water, what will be the minimum dev

Description : A thin glass prism placed in air produces minimum deviation of `4^(@)` in a light ray. If the prism is immersed in water, what will be the minimum dev

Last Answer : A thin glass prism placed in air produces minimum deviation of `4^(@)` in a light ray. If the prism is immersed in ... //2` and `.^(a)mu_(w) = 4//3`.

The yield line ultimate moment is obtained when the yield line is --------------- to the direction of the reinforcement [ A ] Parallel [ B ] At right angles. [ C ] Passes through [ D ] Crosses at an angle of 45°

Description : The yield line ultimate moment is obtained when the yield line is --------------- to the direction of the reinforcement [ A ] Parallel [ B ] At right angles. [ C ] Passes through [ D ] Crosses at an angle of 45°

Last Answer : [ B ] At right angles.

A refracted wave occurs when a wave passes from one medium into another medium. What determines the angle of refraction?

Description : A refracted wave occurs when a wave passes from one medium into another medium. What determines the angle of refraction?

Last Answer : The density of the two mediums, and the velocity of the waves.

When an exothermic reversible reaction is conducted adiabatically, the rate of reaction (A) Continuously increases (B) Continuously decreases (C) Passes through a maximum (D) Passes through a minimum

Description : When an exothermic reversible reaction is conducted adiabatically, the rate of reaction (A) Continuously increases (B) Continuously decreases (C) Passes through a maximum (D) Passes through a minimum

Last Answer : (C) Passes through a maximum

When would you measure the minimum preheat temperature? a) On completion of each pass b) Immediately prior to commencing the first pass and subsequent passes c) When the welding is complete d) Minimum preheat temperature measurement is only required if the heat input is lower than that specified in WPS

Description : When would you measure the minimum preheat temperature? a) On completion of each pass b) Immediately prior to commencing the first pass and subsequent passes c) When the welding is ... preheat temperature measurement is only required if the heat input is lower than that specified in WPS

Last Answer : b) Immediately prior to commencing the first pass and subsequent passes

A glass prism has a refracting angle of `60^@`. The angle of minimum deviation is `40^@`. If velocity of light in vacuum is `3 xx 10^8 m//s`. Calculat

Description : A glass prism has a refracting angle of `60^@`. The angle of minimum deviation is `40^@`. If velocity of light in vacuum is `3 xx 10^8 m//s`. Calculat

Last Answer : A glass prism has a refracting angle of `60^@`. The angle of minimum deviation is `40^@`. If ... of light in glass. What is the angle of incidence ?

The refractive index of the material of a prism of `60^(@)` angle for yellow light is `sqrt(2)`. Calculate angle of minimum deviation, angle of incide

Description : The refractive index of the material of a prism of `60^(@)` angle for yellow light is `sqrt(2)`. Calculate angle of minimum deviation, angle of incide

Last Answer : The refractive index of the material of a prism of `60^(@)` angle for yellow light is ... deviation, angle of incidence and angle of refraction.

Pick up the correct statement from the following: (A) The minimum frequency of light for which no electrons are emitted, is called threshold frequency (B) Polarising angle of glass is 57.5° (C) At the polarising angle, the reflected and refracted rays are orthogonal (D) All the above

Description : Pick up the correct statement from the following: (A) The minimum frequency of light for which no electrons are emitted, is called threshold frequency (B) Polarising angle of glass is 57.5° (C) At the polarising angle, the reflected and refracted rays are orthogonal (D) All the above

Last Answer : Answer: Option D

A slit of width ‘a’ is illuminated by white light. For what value of ‘a’ will the first minimum for red light fall at an angle of 300 wavelength of red light is 6500 A0 A. 1.1 x 10 -3 cm B. 1.4 X 10 -4 cm C. 1.3 X 10 -4 cm D. 1.6 X 10 -4 cm

Description : A slit of width ‘a’ is illuminated by white light. For what value of ‘a’ will the first minimum for red light fall at an angle of 300 wavelength of red light is 6500 A0 A. 1.1 x 10 -3 cm B. 1.4 X 10 -4 cm C. 1.3 X 10 -4 cm D. 1.6 X 10 -4 cm

Last Answer : C. 1.3 X 10 -4 cm

a ray at which angle would produce the most glare? -General Knowledge

Description : a ray at which angle would produce the most glare? -General Knowledge

Last Answer : A ray at 70 degrees angle would produce the most glare.