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 ?
Description : The refracting angle of a glass prism is `60^(@)`. The value of minium deviation for light passing through the prism is `40^(@)`. Calculate the value
Last Answer : The refracting angle of a glass prism is `60^(@)`. The value of minium deviation for light passing through the ... prism. Given `sin 50^(@) = 0.766`.
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
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.
Description : A ray incident normally on one face of a right-angled isosceles glass prism in air is deviated through `90^(@)`. What can you say about the refractive
Last Answer : A ray incident normally on one face of a right-angled isosceles glass prism in air is deviated ... you say about the refractive index of glass ?
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.
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.
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 ?
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.
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)
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
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 ? .
Description : Why do seeds sown very deep fails to emerge? -Biology
Last Answer : answer:
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.
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`.
Description : What is the small index of refractive of the material of a right angled prism with equal sides for which a ray of light entering one of the sides norm
Last Answer : What is the small index of refractive of the material of a right angled prism with equal sides ... of the sides normally will be totally reflected ?
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.
Description : If the incident ray falls directly on the normal. What will be the angle of incidence .? a ) 0 b)30 c)60 d)90
Last Answer : a ) 0
Description : Fig shows a small air bubble inside a glass sphere `(mu = 1.5)` of radius 10 cm. the bubble is 4.0 cm below the surface and is viewed normally from th
Last Answer : Fig shows a small air bubble inside a glass sphere `(mu = 1.5)` of radius 10 cm. the ... from the outside. Find the apparent depth of the bubble.
Description : Refracting telescopes, if uncorrected, suffer from chromatic aberration. Chromatic aberration occurs because: w) red light is focused more strongly than blue light x) blue light is focused more strongly than ... central rays, z) the central light rays are focused more strongly than the outer rays.
Last Answer : ANSWER: X -- BLUE LIGHT IS FOCUSED MORE STRONGLY THAN RED LIGHT
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.
Description : A cannon of weight 10 tonnes fires a shell of 50 kg with a muzzle velocity of 900 m/sec at an angle of 30?. The time taken for the shell to emerge from the barrel is 0.004 sec. The velocity of the cannon would be a.3.9 m/sec b.7.8 m/sec c.8.95 m/sec d.1.95 m/sec e.5.85 m/sec
Last Answer : a. 3.9 m/sec
Description : In a certain spectrum produced by a glass prism of dispersive power `0.0305,` it is found that the refractive index for the red ray is `1.645.`and tha
Last Answer : In a certain spectrum produced by a glass prism of dispersive power `0.0305,` it is found that ... . What is the refractive index for the yellow ray?
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
Description : When a ray of light falls on a smooth surface and returns to the same medium, it is called?
Last Answer : Reflection of light
Description : The cardiac pacemaker in a patient fails to function normally. The doctors find that an artifical pacemaker is to be grafted in him. It is likely that
Last Answer : The cardiac pacemaker in a patient fails to function normally. The doctors find that an ... node C. Atrioventricular node D. Atroventricular bundle
Description : If the pointer on a megger fails to return to 'zero' when not being used, the _____________. A. megger is out of calibration B. megger is operating normally C. hairsprings are burned out D. pointer probably stuck in that position
Last Answer : Answer: B
Description : If the pointer fails to return to zero when a megger is disconnected, the _____________. A. pointer is stuck B. hair springs are burned out C. megger is out of calibration D. megger is operating normally
Last Answer : Answer: D
Description : The cardiac pacemaker in a patient fails to function normally. The doctors find that an artificial pacemaker is to be grafted in him. It is likely that it will be grafted at the site of (a) atrioventricular bundle (b) Purkinje system (c) sinoatrial node (d) atrioventricular node.
Last Answer : (b) Purkinje system
Description : How many face edges and vertices does a rectangular prism have?
Last Answer : A rectangular prism has 6 faces, 12 edges and 8 vertices
Description : How many face is the rectangular prism?
Description : How does reflecting telescope differ from refracting telescope?
Last Answer : Reflecting telescope can be made much larger than a refracting telescope, so that a better and bright image can be seen.
Description : Pick up the correct statement from the following: (A) A refracting telescope consists optically of two lenses (B) The principal axes of both the lenses coincide the optical axis of the telescope (C) The lens nearer the object to be viewed is convex and is called objective (D) All the above
Last Answer : (D) All the above
Description : Flint glass (A) Has slightly the greater refracting power than crown glass (B) Has roughly double refracting power than that of crown (C) And crown glass proportions yield the required focal length ... dispersion produced by the convex lens at the emergence from the concave (D) All the above
Description : Which of the following can be used to see through Venus's clouds? w) refracting telescopes x) radar y) x-rays z) ultraviolet
Last Answer : ANSWER: X -- RADAR
Last Answer : The angle between the refracting surfaces of a prism is called the prism angle.
Description : The angle of minimum deviation of an equiangular prism, having a refractive index of 1.732 is (a) 60° (b) 30° (c) 45° (d) 0°
Last Answer : Ans:(a)
Description : The following instrument is used to set out a right angle (a) Cross staff (b) Optical staff (c) Prism square (d) None of the above (e) All the above*
Last Answer : e) All the above*
Description : Does it comfort you in any way, that on Mu Ara d, 50 odd light years away from Earth, (potential) beings that direct their telescopes to our planet, could see our deceased loved ones when they were still alive?
Last Answer : They are seeing ghosts. Omae wa mo shindeiru.
Description : 13. A ray of light, incident obliquely on a face of a rectangular glass slab placed in air, emerges from the opposite face parallel to the incident ray. State two factors on which the lateral displacement of the emergent ray depends. [Foreign] -Chemistry-10
Last Answer : Lateral displacement depends on the: angle of incidence, thickness of slab, and refractive index of the material. (any two)
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^(@)`
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!
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'.
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
Description : Critical angle is minimum when a light ray passes which thing?
Last Answer : Glass to air
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.
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
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
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