Description : A light year is a unit of: (1) Time (2) Distance (3) Intencity of Light (4) Frequency
Last Answer : (2) Distance Explanation: A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km.
Description : ‘Therm' is the unit of – (1) Power (2) Heat (3) Light (4) Distance
Last Answer : (2) Heat Explanation: Therm is a non-SI unit of heat energy equal to 100,000 British thermal units (BTU). It is approximately the enemy equivalent of burning 100 cubic feet (often referred to as ... to convert the volume of gas used to its heat equivalent, and thus calculate the actual energy use.
Description : ‘Therm’ is the unit of (1) power (2) heat (3) light (4) distance
Last Answer : heat
Description : The mean distance from the Sun to the Earth is called: (1) Light year (2) Astronomical Unit (3) Parallactic Second (4) Angstrom
Last Answer : (2) Astronomical Unit Explanation: The distance from the Earth to the Sun on average is about 149 million km which is often referred to as Astronomical Unit. 1 AU = 149 million km.
Description : Light year is a unit of – (1) Light (2) Current (3) Distance (4) Time
Last Answer : (3) Distance Explanation: A light-year is a unit of length used informally to express astronomical distances. It is equal to just under 10 trillion kilometres.
Description : Which among the following is not a unit of distance? (1) Light year (2) Longsec (3) Astronomical unit (4) Parsec
Last Answer : (2) Longsec Explanation: Longsec is unit of parse, parse is used to allocate distance to astronomical bodies beyond the solar system.
Description : A light year is a unit of – (1) time (2) distance (3) speed of light (4) intensity of light
Last Answer : (2) distance Explanation: As defined by the International. Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year. It is a measure of distance (rather than, as is sometimes misunderstood, a measure of time).
Description : Light year is a unit of - (1) time (2) distance (3) light (4) intensity of light
Last Answer : (2) distance Explanation: A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second.
Description : Light year is a unit of (1) Light (2) Current (3) Distance (4) Time
Last Answer : Distance
Description : Decibel is the unit used for – (1) Speed of light (2) Intensity of heat (3) Intensity of sound (4) Radio wave frequency
Last Answer : (3) Intensity of sound Explanation: The decibel (abbreviated dB) is the unit used to measure the intensity of a sound. The decibel scale is a little odd because the human ear is incredibly ... of a physical quantity (usually power or intensity) relative to a specified or implied reference level.
Description : Decibel is the unit used for (1) Speed of light (2) Intensity of heat (3) Intensity of sound (4) Radio wave frequency
Last Answer : Intensity of sound
Description : Ondometer is a - (1) Measuring instrument for distance covered by motor wheels (2) Measuring instrument for frequency of electromagnetic waves (3) Device for measuring sound intensity (4) Measuring instrument for electric power
Last Answer : (2) Measuring instrument for frequency of electromagnetic waves
Description : Bar is a unit of which one of the following? (1) Force (2) Energy (3) Pressure (4) Frequency
Last Answer : (3) Pressure Explanation: The bar is a unit of pressure defined as 100 kilopascals. It is about equal to the atmospheric pressure on Earth at sea level.
Description : Sound energy passing per second through a unit area held perpendicular is called - (1) Intensity (2) Frequency (3) Amplitude (4) Quality
Last Answer : (1) Intensity Explanation: Sound energy passes through a unit area held perpendicular to the direction of propagation of sound waves is called intensity of sound.
Description : The energy associated with one photon of a light beam is proportional to one of the following. Is it proportional to: w) the intensity of the light source from which it came x) the number of photons in the beam y) the frequency of the photon z) the speed of the photon
Last Answer : ANSWER: Y -- THE FREQUENCY OF THE PHOTON
Description : The speed of light in vacuum "C" divided by the Index of Refraction "N" gives the: w) frequency of the light x) speed of the light in the medium y) energy of the light z) wavelength of the light
Last Answer : ANSWER: X -- SPEED OF THE LIGHT IN THE MEDIUM
Description : Which astronomical unit os distance is greater, a parsec or a light year?
Last Answer : A parsec
Description : A light year is the unit of _____. A. Light B. Distance C. Speed D. Space
Last Answer : ANSWER: B
Description : Unit of distance used in navigation is (a) Nautical mile (b) Kilometre (c) Light year (d) Yard
Last Answer : Ans:(a)
Description : The unit of astronomical distance is the (a) angstrom (b) kilometre (c) nautical mile (d) light year
Last Answer : Ans:(d)
Description : Which one of the following is not a unit of distance? A. Parsec B. Astronomical Unit C. Light Year D. Foot Candle (Answer)
Last Answer : D. Foot Candle (Answer)
Description : Which of the following is not the unit of distance? (A) Angstrom (B) Light year (C) Micron (D) Milestone
Last Answer : (D) Milestone
Description : Two waves, each of amplitude 1.5 mm and frequency 10 Hz, are travelling in opposite direction with a speed of 20 mm/s. The distance in mm between adjacent nodes is : (1) 1.0 (2) 1.2 (3) 1.5 (4) 2.0
Last Answer : (1) 1.0 Explanation: Since the amplitudes, frequency and the speed of both the waves are in same, hence the wavelength of the composite wave will be the same as the single wave.
Last Answer : 2mm
Description : A light year is a measure of : (1) Speed (2) Velocity (3) Distance (4) Time
Last Answer : (3) Distance Explanation: A light-year is a unit of length equal to just under 10 trillion kilometres (or about 6 trillion miles). As defined by the International Astronomical Union (TAU), a ... lightyear is a measure of distance (rather than, as is sometimes misunderstood, a measure of time).
Description : Dioptere is the unit of – (1) power of a lens (2) focal length of a lens (3) light intensity (4) sound intensity
Last Answer : (1) power of a lens
Description : Watt is a unit of - (1) Time (2) Power (3) Light (4) intensity of light
Last Answer : (2) Power
Description : Dioptere is the unit of (1) power of a lens (2) focal length of a lens (3) light intensity (4) sound intensity
Last Answer : power of a lens
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 : Coherent light of a single frequency passes through a double slit with a separation d, to produce a pattern on a screen as distance D from the slits. What would cause the separation between adjacent ... d between the slits C. increase the distance D. increase the frequency of the incident light
Last Answer : B. increase the separation d between the slits
Description : Between which bodies is one Astronomical Unit the average distance?
Last Answer : – Earth and the Sun
Description : Which of the following is the unit of Astronomical Distance? (1) metre/sec. (2) Sec. (3) Para/sec. (4) Parsec
Last Answer : (4) Parsec Explanation: A parsec is a unit of length used to measure large distances to objects outside our Solar System. One parsec is the distance at which one astronomical unit subtends an angle of one arc second. A parsec is equal to about 3.26 light-years in length.
Description : 'Parsec' is the unit measurement of - (1) Density of stars (2) Astronomical distance (3) Brightness of heavenly bodies (4) Orbital velocity of giant stars
Last Answer : (2) Astronomical distance Explanation: The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System.
Description : 'Parsec' is the unit measurement of – (1) Density of stars (2) Astronomical distance (3) Brightness of heavenly bodies (4) Orbital velocity of giant stars
Last Answer : (2) Astronomical distance Explanation: Parsec is a unit of distance used in astronomy to measure large distances to objects outside our Solar System. It is equal to about 3.26 light years (3.086 x 1013 kilometres).
Description : Which of the following is the unit of distance in navigation? (1) Knot (2) Nautical mile (3) Bar (4) Angstrom
Last Answer : (2) Nautical mile Explanation: A nautical mile is based on the circumference of the earth, and is equal to one minute of latitude. It is slightly more than a statute (land measured) mile (1nautical mile = 1.1508 statute miles).
Description : Which of the following is the unit of Astronomical Distance ? (1) metre/sec. (2) Sec. (3) Para/sec. (4) Parsec
Last Answer : Parsec
Description : ‘Parsec’ is the unit measurement of (1) Density of stars (2) Astronomical distance (3) Brightness of heavenly bodies (4) Orbital velocity of giant stars
Last Answer : Astronomical distance
Description : What is the unit of frequency of a word ?
Last Answer : word frequency = f
Description : What is the SI unit of frequency? (1) Newton (2) Watt (3) Farad (4) Hertz
Last Answer : (4) Hertz Explanation: The number of waves or vibrations passing through a point in one second is called Frequency. The SI (System International) Unit of Frequency is Hertz(Hz).
Description : Hertz is a unit for measuring – (1) Intensity of waves (2) Frequency of waves (3) Wavelength (4) Clarity of waves
Last Answer : (2) Frequency of waves
Description : Radian per second is unit of _______. (1) Momentum (2) Moment of Inertia (3) Frequency (4) Angle Velocity
Last Answer : (4) Angle Velocity Explanation: The SI unit of angular velocity is radians per second.
Description : Hertz is a unit for measuring (1) Intensity of waves (2) Frequency of waves (3) Wavelength (4) Clarity of waves
Last Answer : Frequency of waves
Description : Distances of stars are measured in – (1) Galactic unit (2) Stellar mile (3) Cosmic kilometre (4) Light year
Last Answer : (4) Light year Explanation: Light year is a unit of length used informally to express astronomical distances. It is most often used when expressing distances to stars and other distances on a galactic scale. It is equal to just under 10 trillion kilometres.
Description : Distances of stars are measured in (1) Galactic unit (2) Stellar mile (3) Cosmic kilometre (4) Light year
Last Answer : Light year
Description : Kilowatt-hour (KWH) is the unit of - (1) power (2) resistance (3) resistivity (4) energy
Last Answer : (4) energy Explanation: The kilowatt hour (symbol kWh, kW h or kW h) is a unit of energy equal to 3.6 megajoules. If the energy is being transmitted or used at a constant rate (power) over a period of time, the total energy in kilowatt hours is the power in kilowatts multiplied by the time in hours.
Description : 'Kilowatt-hour' is the unit of - (1) potential difference (2) electric power (3) electric energy (4) electric potential
Last Answer : (3) electric energy Explanation: The kilowatt hour (symbolized kW h as per SI) is a composite unit of energy equivalent to one kilowatt (1 kW) of power sustained for one hour.
Description : Which of the following has the same unit as energy? (1) Power f(2) Density (3) Work (4) Force
Last Answer : (3) Work Explanation: The SI unit of work is the joule (J), which is defined as the work expended by a force of one Newton through a displacement of one metre.
Description : Kilowatt-hour is the unit of : (1) Energy (2) Power (3) Force (4) Momentum
Last Answer : (1) Energy Explanation: The kilowatt hour, or kilowatthour, is a unit of energy equal to 1000 watt hours or 3.6 mega-joules For constant power, energy in watt hours is the product of ... kilowatt hour is most commonly known as a billing unit for energy delivered to consumers by electric utilities.
Description : A kilowatt-hour is unit of – (1) Energy (2) Power (3) Electric charge (4) Electric current
Last Answer : (1) Energy Explanation: Work is defined as a force acting through a distance (a length of space), energy is always equivalent to the ability to exert pulls or pushes against the basic forces of ... in joules, but in many fields other units, such as kilowatt-hours and kilocalories, are customary.