Description : Calculate the energy of hydrogen atom in the ground state given that the after Bohr orbit og hydrogen is `5xx10^(-11)m` and electronic charge is `1.6x
Last Answer : Calculate the energy of hydrogen atom in the ground state given that the after Bohr orbit og hydrogen is ` ... electronic charge is `1.6xx10^(-19) C`.
Description : The electron with change `(q=1.6xx10^(-19)C)` moves in an orbit of radius `5xx10^(-11)`m with a speed of `2.2xx10^(6)ms^(-1)`, around an atom. The equ
Last Answer : The electron with change `(q=1.6xx10^(-19)C)` moves in an orbit of radius `5xx10^(-11)`m with a speed of `2. ... -3)A` C. `1.12xx10^(-9)A` D. `1.12A`
Description : The diameter of the planet Jupiter is `3580km`. What is its angular diameter when it is at a distance of `8.25xx10^(8)km` from the earth?
Last Answer : The diameter of the planet Jupiter is `3580km`. What is its angular diameter when it is at a distance of `8.25xx10^(8)km` from the earth?
Description : The total luminosity of the sun is `3.9xx10^(26)W`. The mean distance of the sun from the earth is `1.496xx10^(11)m`. Calculate the value of solar con
Last Answer : The total luminosity of the sun is `3.9xx10^(26)W`. The mean distance of the sun from the ... 496xx10^(11)m`. Calculate the value of solar constant.
Description : Angle through which an object has moved is called it's A. linear displacement B. linear distance C. angular displacement D. angular distance
Last Answer : angular displacement
Description : Electrons move at right angles to a magnetic field of `1.5xx10^(-2)` Tesla with a speed of `6xx10^(7)m//s`. If the specific charge of the electron is
Last Answer : Electrons move at right angles to a magnetic field of `1.5xx10^(-2)` Tesla with a speed of `6xx10^ ... C//kg`. The radius of the circular path will be
Description : What is the drift velocity of electrons in a copper conductor having a cross-sectional area of `5xx10^(-6) m^(2)` if the current is 10 A. Assume there
Last Answer : What is the drift velocity of electrons in a copper conductor having a cross-sectional area of `5xx10^(-6) m^( ... `8.0xx10^(28) "electrons"//m^(3)`.
Description : The coil of a moving coil galvanometer has an effective area of 4xx10^(-2)m^(2)`. It is suspended in a magnetic field of `5xx10^(-2)` Wb `m^(-2)`. If
Last Answer : The coil of a moving coil galvanometer has an effective area of 4xx10^(-2)m^(2)`. It is suspended in a ... D. current sensitivity is `40 deg` `A^(-1)`
Description : Is the changing angular diameter of the sun cyclical?
Last Answer : Yes
Description : When does the sun reaches its maximum angular distance from the equator?
Last Answer : At the solstice
Description : The distance of Venus form the sun as determine by radar echo method is found to be `1.082xx10^(11)m`. The period of its revolution is 224.633 days. I
Last Answer : The distance of Venus form the sun as determine by radar echo method is found to be `1.082xx10^( ... , compute the distance of the earth from the sun.
Description : Estimate the mass of the sun, assuming the orbit of Earth around the sun to be a circle. The distance between the sun and the Earth is `1.49 xx 10^(11
Last Answer : Estimate the mass of the sun, assuming the orbit of Earth around the sun to be a circle. The distance between the sun ... xx 10^(-11) Nm^(2) kg^(-2)`.
Description : `K_(p)` value for `C_(2)H_(4(g))+H_(2(g))rArrC_(2)H_(6(g))is 5xx10^(18)" atm"^(-1)andK_(p)"` for `C_(2)H_(2)+H_(2(g))rArrC_(2)H_(4(g)) " is "5xx10^(26
Last Answer : `K_(p)` value for `C_(2)H_(4(g))+H_(2(g))rArrC_(2)H_(6(g))is 5xx10^(18)" atm"^(-1)andK_(p)"` for ... ^(8)` C. `1.5xx10^(-45)` D. `2.5xx10^(-45)`
Description : `._(92)^(238)U` atom distintgrates to `._(84)^(214) Po` with a half life of `4.5xx10^(9)` years by emitting six alpha particles and n electrons. Here
Last Answer : `._(92)^(238)U` atom distintgrates to `._(84)^(214) Po` with a half life of `4.5xx10^(9)` years by emitting ... . Here n is - A. 6 B. 4 C. 10 D. 7
Description : A 10 C of charge flows through a wire in 5 minutes. The radius of the wire is 1 mm. It contains `5xx10^(22)` electrons per `"centimetre"^(3)`. Calcula
Last Answer : A 10 C of charge flows through a wire in 5 minutes. The radius of the wire is 1 mm. It ... centimetre"^(3)`. Calculate the current and drift velocity.
Description : A particle of mass m is moving along a straight path through the origin of coordinates with a velocity v. The angular momentum of the particle about the origin (a) mv (b) Depends on its distance from origin (c) Is zero (d) Changes from positive to negative as it passes through the origin
Last Answer : Ans:(c)
Description : The unbalanced force caused by an eccentric mass m rotating at an angular speed v and located at a distance r from the axis of rotation is 2 a. mr ω 2 b. mgω 2 c. mr ω 2
Last Answer : c. mr ω 2
Description : The staff reading at a distance of 80 m from a level with the bubble at its centre is 1.31 m. When the bubble is moved by 5 divisions out of the centre, the reading is 1.39 m. The angular value of the one division of the bubble, is (A) 28.8 sec (B) 41.25 sec (C) 14.52 sec (D) 25.05
Last Answer : (B) 41.25 sec
Description : The latitude of a place is expressed by its angular distance in relation to— (1) Equator (2) South Pole (3) Axis of the Earth (4) North Pole
Last Answer : (1) Equator Explanation: Latitude is a geographic coordinate that specifies the north-south position of a point on the Earth's surface. The lines of constant latitude, or parallels, run east-west as circles ... defined below) which ranges from 0° at the Equator to 90° (North or South) at the poles.
Last Answer : Equator
Description : During planetary motion which of the following remains constant? a.Augular speed b.Linear velocity c.Angular acceleration d.Total angular momentum e.All of the above
Last Answer : b. Linear velocity
Description : The torque acting on a system is zero. Which of the following will be conserved? a.Angular velocity b.Linear momentum c.107 dynes d.Angular momentum e.Moment of inertia
Last Answer : d. Angular momentum
Description : In planetary motion a.The total angular momentum remains constant b.The total linear momentum remains constant c.The total linear momentum is zero d.The total angular momentum is zero e.None of the above
Last Answer : a. The total angular momentum remains constant
Description : The angular momentum L = r x p, where r is a position vector and P is linear momentum of a body.
Last Answer : The angular momentum L = r x p, where r is a position vector and P is linear momentum of a body. If r = 4i x 6j - 3k and p = 2i x 4j - 5k, find L.
Description : There is a ring of radius r having linear charge density `lambda` and rotating with a uniform angular velocity `omega.` the magnetic field produced by
Last Answer : There is a ring of radius r having linear charge density `lambda` and rotating with a uniform angular velocity ` ... D. `(mu_(0)lambda)/(2omega^(2))`
Description : A rocket works on the principle of conservation of (a) Mass (b) Energy (c) Linear momentum (d) Angular momentum
Description : If an electron and a photon have the same wavelength, then they will have the same – (1) velocity (2) linear momentum (3) angular momentum (4) energy
Last Answer : (2) linear momentum Explanation: When a non-relativistic electron and a non-relativistic proton are moving and have the same de Broglie wavelength, then they will have the same linear mo-mentum p = mv.
Description : Plank's constant has the dimensions of (1) energy (2) linear momentum (3) angular momentum (4) force
Last Answer : (1) energy Explanation: The Planck's constant (h) can be defined as a pro-portionality constant that relates the energy (E) of a photon to the frequency (?) of its associated electro-magnetic ... Planck constant is named after Max Planck, the instigator of quantum theory, who discovered it in 1900.
Description : When net torque is zero, will be constant - (1) force (2) angular momentum (3) linear momentum (4) acceleration
Last Answer : (2) angular momentum Explanation: Since a torque (rate of change of angular momentum analogous to force) applied over time is equivalent to a change in angular momentum, then if torque is zero, angular momentum is constant.
Description : A jet engine works, on the principle of conservation of - (1) linear momentum (2) angular momentum (3) energy (4) mass
Last Answer : (1) linear momentum Explanation: Linear momentum is a vector quantity defined as the product of an object's mass, m, and its velocity, v. Linear momentum is denoted by the letter p and is called ... for short: Note that a body's momentum is always in the same direction as its velocity vector.
Description : A rocket works on the principle of conservation of ______. (1) mass (2) linear momentum (3) energy (4) angular momentum
Last Answer : (2) linear momentum Explanation: A rocket works by expelling gases from one end at a very high velocity. The escaping gases have a very high speed and this with their mass translates to a very large momentum.
Description : Momentum possessed by spinning objects is called A. linear momentum B. angular momentum C. normal momentum D. degrees' momentum
Last Answer : angular momentum
Description : Mass and velocity are combined to give A. angular momentum B. equilibrium C. acceleration D. linear momentum
Last Answer : linear momentum
Description : In linear motion, the energy is given by 1⁄2mv2. Similarly, in rotational motion, the rotational energy is given by A. 1/2 I ω; where I: moment of inertia of the body, ω: angular velocity B. 1/ ... angular velocity D. 1/2 I² ω²; where I: moment of inertia of the body, ω: angular velocity
Last Answer : 1/2 × I × ω²; where I: moment of inertia of the body, ω: angular velocity
Description : What type of motion the fluid element undergoes, when it changes from one position to another position, such that the angle between the two sides changes? (A) Rotation (B) Translation (C) Linear deformation (D) Angular deformation
Last Answer : (D) Angular deformation
Description : If a linear traverse follows a sharp curve round a large lake where it is difficult to have long legs, the accuracy of the traverse may be improved by (A) Taking short legs (B) Making ... (C) Making a subsidiary traverse to determine the length of a long leg (D) All the above
Last Answer : (C) Making a subsidiary traverse to determine the length of a long leg
Description : If the angular measurements of a traverse are more precise than its linear measurements, balancing of the traverse, is done by (A) Bowditch's rule (B) Transit rule (C) Empirical rule (D) All of the above
Last Answer : (B) Transit rule
Description : In precision theodolite traverse if included angles are read twice and the mean reading accepted using both verniers having a least count of 30". Assuming the instrument to be in perfect adjustment, linear measurements correct to 6 mm per ... legs) (A) 50" n (B) 30" n (C) 60" n (D) None of these
Last Answer : (A) 50" n
Description : Setting out a curve by two theodolite method, involves (A) Linear measurements only (B) Angular measurements only (C) Both linear and angular measurements (D) None of these
Last Answer : (B) Angular measurements only
Description : Under ordinary conditions, the precision of a theodolite traverse is affected by (A) Systematic angular errors (B) Accidental linear errors (C) Systematic linear errors (D) Accidental angular errors
Last Answer : (C) Systematic linear errors
Description : Transit rule of adjusting the consecutive coordinates of a traverse is used where (A) Linear and angular measurements of the traverse are of equal accuracy (B) Angular measurements are more accurate ... (C) Linear measurements are more accurate than angular measurements (D) All of the above
Last Answer : (B) Angular measurements are more accurate than linear measurements
Description : In chain surveying field work is limited to (A) Linear measurements only (B) Angular measurements only (C) Both linear and angular measurements (D) All the above
Last Answer : (A) Linear measurements only
Description : Angles to a given pivot station observed from a number of traverse stations when plotted, the lines to the pivot station intersect at a common point (A) Angular measurements are correct and ... plotting of traverse (D) Angular and linear measurements and also plotting of the traverse are correct
Last Answer : (D) Angular and linear measurements and also plotting of the traverse are correct
Description : What do you understand by linear magnification and angular magnification? Explain how a convex lens is used as a magnifier?
Last Answer : Linear Magnification: The ratio of the size of image to the size of object is called linear magnification. Angular magnification: The ratio of the angle subtended by the image as seen through the optical ... lens used as a magnifier when an object is brought within the focal length of convex lens.
Description : 70. Shear strain is a (a) Linear strain (b) Parabolic strain (c) Angular strain (d) None
Last Answer : (c) Angular strain
Description : Kinematic index of the straw Walker is as ratio (a) Angular velocity of straw Walker to angular velocity of threshing drum (b) Angular velocity of straw Walker to angular velocity of threshing drum (c) Angular velocity of straw Walker to linear velocity of combine (d) All of the above
Last Answer : (a) Angular velocity of straw Walker to angular velocity of threshing drum
Description : What is the molecular geometry of thiocyanate (pron: thie-owe-SIE-a-nate) ion (SCN minus 1)? w) linear x) angular y) tetrahedral z) pyramidal
Last Answer : ANSWER: W -- LINEAR
Description : What is the molecular geometry of the Bromine Tetraflouride ion (B-F-4-minus 1) w) linear x) angular y) tetrahedral z) pyramidal
Last Answer : ANSWER: Y -- TETRAHEDRAL
Description : What is the molecular geometry of XeO2 (Xenon Dioxide)? w) linear x) angular y) tetrahedral z) trigonal planar
Last Answer : ANSWER: X -- ANGULAR
Description : If an electron and a photon have the same wavelength, then they will have the same (1) velocity (2) linear momentum (3) angular momentum (4) energy