Description : Pick up the correct statement from the following: (A) In astronomical telescope, the rays from the object after refraction at the objective are brought to a focus before entering the eyepiece to produce ... the objective traversing through the eyepiece, is called line of sight (D) All the above
Last Answer : (D) All the above
Description : An object is displaced by 10 meters in the direction of applied force. If the applied force is 75 N, What is the work done by the force? -Physics
Last Answer : (d) 750 joule
Description : An object located four focal lengths in front of a thin, converging lens is moved to within two focal lengths of the lens. As a result, does the size of the image produced by the lens increase, decrease or remain the same?
Last Answer : ANSWER: INCREASE
Description : When describing image formation for flat shiny surfaces what is an important rule to remember about light rays?
Last Answer : The angle when it leaves is the same as the angle when it hits
Description : In order to form an image as seen in a mirror in what order must light rays reflect?
Last Answer : hvjvbjb
Description : A diverging lens only produces a virtual image because the light rays never:?
Last Answer : converge
Description : A small hole in the window of a closed room forms an inverted image of outside building on the opposite wall of the room. This happens because (a) the rays of light suffer lateral inversion on entering the ... propagation of light (c) the hole acts as a convex lens (d) the hole acts as a prism
Last Answer : Ans:(b)
Description : The defect of a lens whereby rays of white light proceeding from a point get dispersed into their components and conveyed to various foci, forming a blurred and coloured image is known as (A) Chromatic aberration (B) Spherical aberration (C) Astigmatism (D) Coma
Last Answer : (A) Chromatic aberration
Description : In Michelson ‘s interferometer 100 fringes cross the field view when the movable mirror is displaced through 0.0248 mm. Calculate the wavelength of monochromatic light used A. 5896 A 0 B.5890 A 0 C.4000 A 0 D. 4890 A 0
Last Answer : B.5890
Description : Every hot object emits – (1) X-rays (2) Visible light (3) Infrared rays (4) Ultraviolet rays
Last Answer : (3) Infrared rays
Description : Every hot object emits _____ (1) X–rays (2) Visible light (3) Infrared rays (4) Ultraviolet rays
Last Answer : Infrared rays
Description : Name the extremely remote celestial object, emitting exceptionally large amounts of light energy, and typically having a star like image in a telescope. -Space
Last Answer : answer:
Description : Type of bend that occurs as a result of differences in thermal contraction rates between the core and the cladding material. ∙ A. Macrobending ∙ B. Microbending ∙ C. Quad bending ∙ D. Constant-radius bending
Last Answer : B. Microbending
Description : With millions already displaced and seeking asylum in the Middle East, where will Finland, Sweden and Germany deport 10's of thousands of refugees already in Europe [Detail/link]?
Last Answer : answer:They will get a free ride back to where they came from. Swedish Migration Minister Morgan Johansson said authorities faced a difficult task in deporting such large numbers, but insisted failed asylum seekers had to return home.
Description : Would you rescue a displaced fledging bird or leave it be?
Last Answer : If he’s a fledgeling, then he’s supposed to be learning to fly. Leave him be.
Description : Find the amount of water displaced by a solid spherical ball of diameter 4.2 cm, when it is completely immersed in water. -Maths 9th
Last Answer : The amount of water displaced by a solid spherical ball when it is completely immersed in water is equal to its volume. Volume of a sphere of radius r is 34πr3 As the diameter of the ball is 4.2 cm, its radius r=2.1 cm Hence, volume of water displaced =34πr3=34×722×2.1×2.1×2.1=38.808 cm3
Last Answer : Solution of this question
Description : Find the amount of water displaced -Maths 9th
Last Answer : Radius of spherical ball (r) = 0.21/2 m Water displaced by spherical ball = Volume of spherical ball = 4/3 πr3 = 4/3 x 22/7 x 0.21/2 x 0.21/2 x 0.21/2 = 0.004851 m3
Description : The author of the book We are Displaced ? -General Knowledge
Last Answer : Malala Yousafzai
Description : Silver is displaced when zinc is added to aqueous sodium argento cyanideThis method of extracting silver is an example for
Last Answer : Silver is displaced when zinc is added to aqueous sodium argento cyanideThis method of extracting ... Hydro metallurgy C. Pyrometallurgy D. Liquition
Description : In a compression or longitudinal wave the particles of the medium are displaced in a direction to the direction of energy transport.?
Last Answer : Feel Free to Answer
Description : How many ml of water could be displaced by 408 g of lead?
Last Answer : Need answer
Description : A body partially floats in water when (a) The volume of the displaced liquid is equal to the volume of the body (b) The volume of the displaced liquid is greater than the volume of the body (c) ... the weight of the body (d) The weight of the displaced water is greater than the weight of the body
Last Answer : Ans:(a)
Description : When a ship floats on water (a) It displaces no water (b) The mass of water displaced is more than the mass of the ship (c) The mass of water displaced is equal to the mass of the ship (d) The mass of water displaced is less than the mass of the ship
Last Answer : Ans:(c)
Description : A hydrogen balloon floats because of – (1) Air pressure decreases with decrease in height (2) Air pressure decreases with decrease in weight (3) Weight of the balloon is less than the weight of air displaced by it (4) The pressure inside the balloon is more than the pressure outside it
Last Answer : (3) Weight of the balloon is less than the weight of air displaced by it Explanation: A hydrogen atom is very light. Most of the air on earth is made up of nitrogen, oxygen, and carbon dioxide. ... grams per liter. Nitrogen, which makes up 80% of the air we breathe, weighs 1.2506 grams per liter.
Description : "Upthrust = Weight of the liquid displaced" is known as A. Bernoulli's Principle B. Archimedes' Principle C. Pascal's Law D. Coulomb's law
Last Answer : Archimedes' Principle
Description : The line of action of the buoyant force passes through the centre of gravity of the (A) Submerged body (B) Displaced volume of the fluid (C) Volume of fluid vertically above the body (D) Horizontal projection of the body
Last Answer : (B) Displaced volume of the fluid
Description : Volume of liquid displaced by a floating body is equivalent to its (A) Own weight (B) Submerged weight (C) Own volume (D) Submerged volume
Last Answer : (A) Own weight
Description : The line of action of the buoyant force acts through the (A) Centroid of the displaced volume of fluid (B) Centre of gravity of a submerged body (C) Centroid of the volume of any floating body (D) None of these
Last Answer : (A) Centroid of the displaced volume of fluid
Description : The buoyant force acting on a floating body is dependent on the (A) Viscosity of the liquid (B) Weight of the liquid displaced (C) Depth of immersion of the body (D) Surface tension of the liquid
Last Answer : (B) Weight of the liquid displaced
Description : "When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change." This is ... Chatelier principle (B) Kopp's rule (C) Law of corresponding state (D) Arrhenius hypothesis
Last Answer : (A) Le-Chatelier principle
Description : Which type of chest configuration is typical of the patient with COPD? a) Barrel chest Barrel chest results from fixation of the ribs in the inspiratory position. b) Pigeon chest Pigeon chest ... depression in the lower portion of the sternum and is associated with Mafan's syndrome or rickets.
Last Answer : a) Barrel chest “Barrel chest” results from fixation of the ribs in the inspiratory position.
Description : 07. The line of action of the force of buoyancy acts through the centre of gravity of the volume of the liquid displaced. A) True B) False
Last Answer : A
Description : The force of buoyancy is always __________ the weight of the liquid displaced by the body. (A) Equal to (B) Less than (C) More than (D) None of these
Last Answer : Answer: Option A
Description : The body will float if the force of buoyancy is __________ the weight of the liquid displaced. (A) Equal to (B) Less than (C) More than (D) None of these
Last Answer : Answer: Option C
Description : The buoyancy depends upon the (A) Weight of the liquid displaced (B) Pressure with which the liquid is displaced (C) Viscosity of the liquid (D) Compressibility of the liquid
Description : The line of action of the buoyant force acts through the (A) Centroid of the volume of fluid vertically above the body (B) Centre of the volume of floating body (C) Center of gravity of any submerged body (D) Centroid of the displaced volume of fluid
Last Answer : Answer: Option D
Description : The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced. (A) Equal to (B) Less than (C) More than (D) None of these
Last Answer : Answer: Option B
Description : Buoyant force is (A) Resultant force acting on a floating body (B) Equal to the volume of liquid displaced (C) Force necessary to keep a body in equilibrium (D) The resultant force on a body due to the fluid surrounding it
Description : The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to (A) Buoyancy (B) Equilibrium of a floating body (C) Archimedes' principle (D) Bernoulli's theorem
Description : Choose the wrong statement (A) Any weight, floating or immersed in a liquid, is acted upon by a buoyant force (B) Buoyant force is equal to the weight of the liquid displaced (C) The ... the center of buoyancy (D) Center of buoyancy is located above the center of gravity of the displaced liquid
Description : The line of action of the buoyant force acts through the Centroid of the (A) Submerged body (B) Volume of the floating body (C) Volume of the fluid vertically above the body (D) Displaced volume of the fluid
Description : The center of gravity of the volume of the liquid displaced by an immersed body is called (A) Metacentre (B) Center of pressure (C) Center of buoyancy (D) Center of gravity
Description : Choose the wrong statement (A) The center of buoyancy is located at the center of gravity of the displaced liquid (B) For stability of a submerged body, the center of gravity of body must ... the submerged body must lie at neutral equilibrium for all positions (D) All floating bodies are stable
Description : Buoyant force is (A) The resultant force acting on a floating body (B) The resultant force on a body due to the fluid surrounding it (C) Equal to the volume of liquid displaced (D) The force necessary to maintain equilibrium of a submerged body
Description : According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to (A) The weight of the body (B) More than the weight of the body (C) Less than the weight of the body (D) Weight of the fluid displaced by the body
Description : The centre of gravity of the volume of the liquid displaced by an immersed body is called (A) Centre of gravity (B) Centre of pressure (C) Metacentre (D) Centre of buoyancy
Description : When a body is immersed wholly or partially in a liquid, it is lifted up by a force equal to the weight of liquid displaced by the body. This statement is called (A) Pascal's law (B) (C) Principle of floatation (D) Bernoulli's theorem
Description : Center of buoyancy is the (A) Centroid of the displaced volume of fluid (B) Center of pressure of displaced volume (C) Does not exist (D) None of the above
Description : When a body floating in a liquid, is displaced slightly, it oscillates about (A) C.G. of body (B) Center of pressure (C) Center of buoyancy (D) Metacentre