Description : The gravitational constant for the universe was measured by which of the following? w) Kepler x) Einstein y) Newton z) Cavendish
Last Answer : ANSWER: Z -- CAVENDISH
Description : What is the telescope designed to search for earth-size planets in the nearby region of our galaxy, termed as? (1) Hubble telescope (2) Kepler telescope (3) Copernicus telescope (4) Newton telescope
Last Answer : (1) Hubble telescope Explanation: The Hubble Space Telescope (HST) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.
Description : Who enunciated the laws of planetary motion? (1) Nicolaus Copernicus (2) Johannes Kepler (3) Isaac Newton (4) Galileo
Last Answer : (2) Johannes Kepler Explanation: Kepler's laws of planetary motion are three scientific laws describing orbital motion, each giving a description of the motion of planets around the Sun. The laws are: the ... of a planet is directly proportional to the cube of the semi-major axis of its orbit.
Last Answer : Johannes Kepler
Description : The first reflecting telescope was built by: w) Galileo x) Copernicus y) Tycho Brahe z) Isaac Newton
Last Answer : ANSWER: Z -- ISAAC NEWTON
Description : Which of the following Scientist proved that the path of each planet around the Sun is elliptical? (1) Kepler (2) Galileo (3) Newton (4) Copernicus
Last Answer : (1) Kepler Explanation: India is the first Asian nation to reach Mars orbit, and the first nation in the world to do so in its first attempt. Its Mars Orbiter Mission (MOM), also called ... 2013 by the Indian Space Research Organisation (ISRO). It has been orbiting Mars since 24 September 2014.
Description : Who is the founder of solar system? A. Copernicus (Answer) B. Newton C. Galileo D. Kepler
Last Answer : A. Copernicus (Answer)
Last Answer : Kepler
Description : The wave nature of electrons was EXPERIMENTALLY verified by: w) Einstein x) Davisson and Germer y) Balmer z) Bohr.
Last Answer : ANSWER: X -- DAVISSON AND GERMER
Description : My theory of electrolytic dissociation earned me t 1903 Nobel Prize in chemistry. My name is: w) Niels Bohr x) Svante Arrhenius y) Michael Faraday z) John Cavendish
Last Answer : ANSWER: X -- SVANTE ARRHENIUS
Description : The inventor of the Kelvin temperature scale was: w) K. Cavendish II x) Lord William H. Harrison y) Sir William Thomson z) none of the above
Last Answer : ANSWER: Y -- SIR WILLIAM THOMSON
Description : The value of the universal gravitational constant, G is (a) 6.67 × 1011 Nm2/kg2 (b) 6.67 × 10+9 Nm2/kg2 (c) 6.67 × 10–9 Nm2/kg2 (d) 6.67 × 10–11 Nm2/kg2
Last Answer : Ans:(d)
Description : The scientist who first discovered that the Earth revolves round the Sun was - (1) Newton (2) Dalton (3) Copernicus (4) Einsteirn
Last Answer : (3) Copernicus Explanation: Nicolaus Copernicus was a Polish astronomer who put forth the theory that the Sun is at rest near the center of the Universe, and that the Earth, spinning on its axis once daily, revolves annually around the Sun.
Description : Which of the following is NOT an SI unit of measure? w) watt x) newton y) joule z) erg e) second
Last Answer : ANSWER: Z -- ERG
Description : A two-stage rocket attains a velocity of 3,000 meters per second when it drops the first stage and ignites the second. It consumes 1 kilogram of fuel per second and its exhaust speed is 2,000 meters per second. ... ? w) 2,000 Newtons x) 3,000 Newtons y) 2,000 Newton-seconds z) 3,000 Newton-seconds
Last Answer : ANSWER: W -- 2,000 NEWTONS
Description : A Newton is equal to which of the following? w) kilogram-meter per second x) meter per second squared y) kilogram-meter per second squared z) kilogram per meter-second
Last Answer : ANSWER: Y -- KILOGRAM-METER PER SECOND SQUARED
Description : If the distance between the centers of mass of two bodies is doubled, the gravitational force between the bodies will become what portion of the original force: w) double x) one half y) remain the same z) one quarter
Last Answer : ANSWER: Z -- ONE QUARTER
Description : What process produces most of the energy that is radiated by the Sun? w) gravitational contraction x) chemical combustion y) nuclear fusion z) nuclear fission
Last Answer : ANSWER: Y -- NUCLEAR FUSION
Description : The Grand Unified Theory of the forces of nature combines three of the four forces. Which force is NOT included? w) gravitational x) electromagnetic y) weak nuclear z) strong nuclear
Last Answer : ANSWER: W -- GRAVITATIONAL
Description : In the Millikan oil-drop experiment the UPWARD force on the drop is due to the: w) gravitational and electric fields x) gravitational field and the charge on the drop y) electric field and the size of the drop z) electric field and the charge on the drop
Last Answer : ANSWER: Z -- ELECTRIC FIELD AND THE CHARGE ON THE DROP
Description : Which of the following forces is nonconservative? w) gravitational force x) electrostatic force y) sliding frictional force z) restorative force of a spring
Last Answer : ANSWER: Y -- SLIDING FRICTIONAL FORCE
Description : The gravitational potential energy between two bodies is inversely proportional to: w) the cube of the distance x) the first power of the distance y) the square of the distance z) it has no relation to distance
Last Answer : ANSWER: X -- THE FIRST POWER OF THE DISTANCE
Description : The gravitational potential energy of an object close to the ground varies: w) inversely as its distance from the ground x) directly as its distance from the ground y) inversely as the square of its distance from the ground z) directly as the square of its distance from the ground
Last Answer : ANSWER: X -- DIRECTLY AS ITS DISTANCE FROM THE GROUND
Description : Two steel balls are at a distance S from one another. As the mass of ONE of the balls is doubled, the gravitational force of attraction between them is: w) quartered x) halved y) doubled z) quadrupled
Last Answer : ANSWER: Y -- DOUBLED
Description : The Scientist who told “Heat is a form of Energy” was------? A. Thomas Alva Edison B. Newton C. Joule (Answer) D. Kepler
Last Answer : C. Joule (Answer)
Description : Name the scientist who was the first to use a glass prism to obtain the spectrum of sunlight. (a) Isaac Newton (b) Einstein (c) Kepler (d) Hans Christian Oersted
Last Answer : (a) Isaac Newton
Description : The concept of electric field theory was introduced by: (a) Kepler (b) Newton (c) Dalton (d) Michael Faraday
Last Answer : (d) Michael Faraday
Description : Why is the gravitational constant called the universal constant ?
Last Answer : the distance between two particles of mass 1 kg is 1 m then the force which attracts each other is called gravitational constant. The gravitational constant is called the universal constant. Because it does not ... , the temperature, etc. , the value of this constant remains the same in all cases.
Description : The dimensional formula for universal gravitational constant is – (1) M⁻¹L³T² (2) ML²T⁻² (3) M⁻² (4) M⁻¹L³T⁻²
Last Answer : (4) M⁻¹L³T⁻² Explanation: Universal Constant of Gravitation is represented by G and is derived from Newton's law of gravitation.
Description : What is the value of the gravitational constant G ?
Last Answer : : The value of the gravitational constant G is 6.67384 10-11 Nm2kg-2
Description : The first reflecting telescope was built by: A. Galileo B. Copernicus C. Tyco Brahe D. Isaac Newton
Last Answer : D. Isaac Newton
Description : Who discovered Solar System ? (1) Newton (2) John Hadley (3) Copernicus (4) Galileo
Last Answer : Copernicus
Description : Calculate the value of the universal gravitational constant from the given data. Mass of the Earth = 6 × 10^24 kg,
Last Answer : Calculate the value of the universal gravitational constant from the given data. Mass of the Earth = 6 ... to gravity on the surface = 9.8 m/s2.
Description : A wavelength is commonly measured in which one of the following units? w) radians x) angstroms y) electron volts z) seconds
Last Answer : ANSWER: X -- ANGSTROMS
Description : A transformer has a turns ratio of two to one. If a 100 ohm resistor is connected on the high side, its resistance as measured on the low side would be: w) 25 ohms x) 50 ohms y) 100 ohms z) 400 ohms
Last Answer : ANSWER: W -- 25 OHMS
Description : The rate at which electrical energy is used is measured in w) volts x) amperes y) joules z) watts
Last Answer : ANSWER: Z -- WATTS
Description : According to standard convention, the angles of incidence and reflection for a plane surface are measured from: w) the reflecting surface x) lines at 45 degrees to the reflecting surface y) a line at 90 degrees to the reflecting surface z) there is no standard
Last Answer : ANSWER: Y -- A LINE AT 90 DEGREES TO THE REFLECTING SURFACE
Description : Which one of the following is the name of a device used to measure voltage without drawing ANY current from the circuit being measured? Is it: w) a wattmeter x) a galvanometer y) an ammeter z) a potentiometer
Last Answer : ANSWER: Z -- A POTENTIOMETER
Description : What is the unit of gravitational constant G ?
Last Answer : The unit of gravitational constant G is Nm ^ 2kg ^ -2
Description : Dimensions of gravitational constant ‘G’ are: A. [M]-1 [L]3 [T]-2 B. [M] [L]3 [T]-2 C. [M]-1 [L]2 [T]-1 D. [M] [L]-1 [T]2
Last Answer : [M]-1 [L]3 [T]-2
Description : Which physical phenomenon or principle is most often applied in the search for petroleum reservoirs? w) gravitational attraction x) magnetic field distortions y) natural radioactive decay of minerals z) acoustic wave transmission and reflection
Last Answer : ANSWER: Z -- ACOUSTIC WAVE TRANSMISSION AND REFLECTION
Description : What are the dimensions of the universal gravitational constant?
Last Answer : What are the dimensions of the universal gravitational constant?
Description : Dimension of Universal Gravitational constant is –
Last Answer : M–1L3T–2
Description : How is electrolytic conductance measured experimentally?
Last Answer : Electrolyte conductance can be measured by putting anode and cathode on it and measured the external voltage. Then compared the same with some standard known electrolyte solution. Also, specific ... charge discharge method. So by calculating with inbuilt software we can easily get the conductance.
Description : Explain : Electronegativity and electron gain enthalpy. Which of the two can be measured experimentally?
Last Answer : Explain : Electronegativity and electron gain enthalpy. Which of the two can be measured experimentally?
Description : Which one of the following statements is not correct? A Since voltage depends on concentrations, using standard conditions makes it easier to compare different electrochemical reactions. B We have ... half-reactions are determined by combining the relevant half-cell with a standardised half-cell.
Last Answer : C The direction of a redox reaction can only be determined experimentally.
Description : What is the value of gravitational constant G?
Last Answer : 1
Description : Assuming constant gravity and no air resistance, the path of a cannonball fired from a cannon is: w) a semi-circle x) an ellipse y) a parabola z) a hyperbola
Last Answer : ANSWER: Y -- A PARABOLA
Description : The temperature of a gas is held constant while its volume is reduced. The pressure the gas exerts on the walls of its container increases because its molecules: w) strike the container walls more ... walls with higher speeds y) strike the container walls with greater force z) all of the above
Last Answer : ANSWER: W -- STRIKE THE CONTAINER WALLS MORE OFTEN
Description : If the resultant force acting on a body of constant mass is zero, the body's acceleration is: w) increasing x) decreasing y) always zero z) negative.
Last Answer : ANSWER: Y -- ALWAYS ZERO