Description : Light traveling in optical fiber follows which of the following principles. ∙ a. Huygen’s principle ∙ b. Reflection theory ∙ c. Light theory ∙ d. Snell’s law
Last Answer : d. Snell’s law
Description : An Electromagnetic wave falls on to a boundary between two losses less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted ... A) Fresnel reflection (B) Fresnel refraction (C) Snell's law (D) None of these
Last Answer : Answer: Option A
Description : Lambert's law is related to – (1) Reflection (2) Refraction (3) Interference (4) Illumination
Last Answer : (4) Illumination Explanation: In optics, Lambert's cosine law says that the radiant intensity or luminous intensity observed from an ideal diffusely reflecting surface or ideal diffuse radiator is directly proportional ... . The law is also known as the cosine emission law or Lambert's emission law.
Description : Lamberts law is related to – (1) Reflection (2) Refraction (3) Interference (4) Illumination
Last Answer : (4) Illumination Explanation: Lambert's Law says that the intensity of emitted light from a surface is directly proportional to the cosine of the angle between the line of view and the normal ... , and exhibits Lambertian reflectance. Such a surface has the same radiance when viewed from any angle.
Description : Lamberts law is related to (1) Reflection (2) Refraction (3) Interference (4) Illumination
Last Answer : Illumination
Description : What cannot be produced by a diffuse reflection but is possible with a specular reflection?
Last Answer : I don’t understand the question
Description : What is meant by predicting the value of a state variable from the past? a) Specular reflection b) Diffuse reflection c) Gaussian filter d) Smoothing
Last Answer : d) Smoothing
Description : What do you call the reflection of a part of incident light at the interface of two media that have different refractive indices? A. Snell’s reflection B. Fresnel reflection C. Lambertian reflection D. Huygen’s reflection
Last Answer : B. Fresnel reflection
Description : According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n1) on another medium (refractive index m2); (A) The angle of incidence is equal to the angle of refraction (B) The angle of ... r) is given by sin i (C) Both (a) and (b) (D) Neither (a) nor (b)
Last Answer : Answer: Option B
Description : The ratio of the total solar radiant energy returned by a planetary body to the total radiant energy incident on the body, the called: (A) Reflectance (B) Reflectance factor (C) Albedo (D) None of these
Last Answer : Answer: Option C
Description : Leaf reflectance depends primarily on: (A) The pigments (B) Internal cell structure (C) Equivalent water content (D) All of these
Last Answer : Answer: Option D
Description : Which one of the following parameters is considered to determine the reflectance of a vegetation canopy? (A) Solar zenith angle (B) Azimuth angle (C) Look angle (D) All of these
Description : Pick up the correct statement from the following: (A) A graphical representation of spectral reflectance verses the various growth stages of a crop, depicts a phonologic pattern B) The changes in ... characteristic of the object which helps in the identification of the object (D) All of these
Description : Lambert’s Law is related to –
Description : What is Snell's law?
Last Answer : it states that the ratio of sine of angle of incidence/sine of angle of refraction=constant, for the light of given color and given pair of medium. where n1 and n2 are the indices of refraction of light in different materials.
Description : Snell's law is related with?
Last Answer : Refraction
Description : “Each point on a spherical wavefront may be considered a source of secondary spherical wavefronts”. This is known as the A. Snell’s law B. D’Alembert’s principle C. Appleton’s theory D. Huygen’s principle
Last Answer : D. Huygen’s principle
Description : What law does a light traveling in air optical fiber follow? A. Millman B. Snell’s C. Maxwell D. Huygen
Last Answer : B. Snell’s
Description : The Snell’s law is given by a) N1 sin θi = N2 sin θt b) N2 sin θi = N1 sin θt c) sin θi = sin θt d) N1 cos θi = N2 cos θt
Last Answer : a) N1 sin θi = N2 sin θt
Description : The Snell’s law can be derived from which type of incidence? a) Incidence angle b) Reflected angle c) Refracted angle d) Oblique incidence
Last Answer : d) Oblique incidence
Description : Whose principle or law states that each point on a wave front may be considered a new wave source? Is it: A. Snell's Law B. Huygens’s Principle C. Young's Law D. Hertz's Law.
Last Answer : B. Huygens’s Principle
Description : Whose principle or law states that each point on a wavefront may be considered a new wave source? Is it: w) Snell's Law x) Huygen's Principle y) Young's Law z) Hertz's Law.
Last Answer : ANSWER: X -- HUYGEN'S PRINCIPLE
Description : If D is the degree of the curve of radius R, the exact length of its specified chord, is (A) Radius of the curve sine of half the degree (B) Diameter of the curve sine of half the ... Diameter of the curve cosine of half the degree (D) Diameter of the curve tangent of half the degree
Last Answer : (B) Diameter of the curve × sine of half the degree
Description : The length of a traverse leg may be obtained by multiplying the latitude and (A) Secant of its reduced bearing (B) Sine of its reduced bearing (C) Cosine of its reduced bearing (D) Tangent of its reduced bearing
Last Answer : (A) Secant of its reduced bearing
Description : The angle of internal friction of soil mass is the angle whose (A) Tangent is equal to the rate of the maximum resistance to sliding on any internal inclined plane to the normal pressure acting on ... on any internal inclined plane to the normal pressure acting on the plane (D) None of these
Description : If a gauge is installed perpendicular to the slope, its measurement is reduced by multiplying (A) Sine of the angle of inclination with vertical (B) Cosine of the angle of inclination with vertical (C) Tangent of the angle of inclination with vertical (D) Calibration coefficient of the gauge
Description : Which of the following statements concerning monitoring techniques in the intensive care unit are true? A. Pulmonary artery and pulmonary capillary wedge pressure readings should be made ... clinical conditions not associated with tissue hypoxia, including liver disease and hypermetabolic states.
Last Answer : Answer: BD DISCUSSION: Many different monitoring techniques may be used to assess the adequacy of therapy for shock. The pulmonary artery catheter can provide important hemodynamic and oxygen ... also be seen with liver disease, toxin ingestion, and hypermetabolic states not associated with shock
Description : Pick out the wrong statement. (A) Angle of repose of coal increases with its increasing size (B) Specific gravity of coal increases with its increasing maturity (C) Refractive index and reflectance of ... of coal decreases with increases in the volatile matter and decrease in the C/H ratio of coal
Last Answer : (D) Specific heat of coal decreases with increases in the volatile matter and decrease in the C/H ratio of coal
Description : Presence of sodium tripolyphosphate (an additive) in synthetic detergent (A) Facilitates its use even in hard water (by sequestering the waterhardening Ca & Mg ions) (B) Inhibits its corrosive effects (C) Does not allow redeposition of dirt on the cleaned surface (D) None of thes
Last Answer : (A) Facilitates its use even in hard water (by sequestering the waterhardening Ca & Mg ions)
Description : Which of the following parameters is not responsible for the heat loss from a hot steam carrying bare pipe surface located in a room without fans? (A) Emissivity of pipe surface (B) Diameter & length of the pipe (C) Temperature of hot pipe surface & that of air in the room (D) None of thes
Last Answer : Option D
Description : Presumption under Evidence law are- a) Presumption of facts b) Presumption of law c) Both the A & B d) None of thes
Last Answer : c) Both the A & B
Description : Pick up the incorrect statement from the following: (A) The built up covered area at the floor level of any storey of a building is called plinth area (B) The usable covered area of the rooms of ... , pantry, store, lavatory, bath room and glazed veranda, is called floor area (D) None of thes
Last Answer : (D) None of thes
Description : Pick up the incorrect statement from the following: (A) The difference between the earliest start time and latest finish time of any activity, is the maximum time available for the activity (B) The ... start time and earliest start time of an activity, is called total float (D) None of thes
Last Answer : (D) None of these
Description : How do you like Adam Lamberts version of "Ring of Fire?"?
Last Answer : I think it’s extremely creative, and not too bad as far as songs go. I don’t particularly like it, but I think it’s just because I know the original…
Description : Who is Adam Lambert's sister?
Last Answer : Adam doesn't have a sister, but he has a younger brother named Neil.
Description : Who is Miranda Lambert's brother?
Last Answer : Adam lampbert
Description : If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface temperature follows __________ ... (A) Hyperbolic (B) Parabolic (C) Linear (D) Logarithmic
Last Answer : (C) Linear
Description : If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface temperature follows __________ law. (A) Parabolic (B) Hyperbolic (C) Linear (D) Logarithmic
Last Answer : (A) Parabolic
Description : 4 The sheet of water flowing over a notch or a weir is known as (A) Sill or crest (B) Nappe or vein (C) Orifice (D) None of thes
Description : In the given figure, the network of a project represents (A) Activity of an excavation of a footing (B) Activity of an excavation which starts at event No. 1 and ends at even No. 2 (C) Activity of excavation which takes 8 units of time (D) None of thes
Last Answer : (C) Activity of excavation which takes 8 units of time
Description : Formula for quick lime, is (A) CaCO3 (B) Ca(OH)2 (C) CO3CO2 (D) None to thes
Description : Plastics are compounds of carbon with element (A) Hydrogen (B) Nitrogen (C) Oxygen (D) All of thes
Description : For sanitary pipes and chemical stonewares, (A) Salt glazing is used (B) Lead glazing is used (C) Opaque glazing is used (D) None of these
Description : Pick up the incorrect statement from the following: (A) In king post truss, one vertical post is used (B) In a queen post truss, one vertical post is used (C) In a queen post truss, two vertical posts are used (D) None of thes
Description : Which of the following statements are true? i) reactive current is necessary to build up the flux for the magnetic field of inductive devices ii) some portion of reactive current is converted into work iii) the cosine of angle ... called power factor a) i & iv b) ii & iii c) i & iii d) iii & iv
Last Answer : a) i & iv
Description : Muller Breslau's principle for obtaining influence lines is applicable to (i) Trusses (ii) Statically determinate beams and frames (iii) Statically indeterminate structures, the material of which is elastic and follows Hooke's law (iv ... B) (i), (ii) and (iv) (C) (i) and (ii) (D) Only (i)
Last Answer : (A) (i), (ii) and (iii)
Description : A balloon lifting in air follows the following principle (A) Law of gravitation (B) Archimedes principle (C) Principle of buoyancy (D) All of the above
Description : Why do sine and cosine have values at 90° and 0°?
Last Answer : There is no premise that a trigonometric function can only be applied in a right triangle. How would it be possible to talk about trigonometric functions of angles greater than 180? Sine and cosine are simply ... projection, its cosine is zero. Similarly, for the sine of a 90 degree angle being 1.
Description : The sine and cosine curves intersect infinitely many times , bounding regions of equal areas . Sketch one of these regions and find its area .
Last Answer : The sine and cosine curves intersect infinitely many times , bounding regions of equal areas . Sketch one of these ... ` C. `3 sqrt2` D. `4 sqrt2`