What is the SI unit of half-life in radioactive decay?
Second
Year
Joule
Becquerel
Correct Answer :
A. Second
Related Questions
Which of the following is a non-contact force?
Friction
Tension
Gravity
Magnetic force
What is the SI unit of resistance in an electrical circuit?
Ohm
Volt
Ampere
Watt
What is the SI unit of electric current?
Ampere
Volt
Ohm
Joule
What is the SI unit of electric potential?
Volt
Ampere
Ohm
Watt
What is the phenomenon where light is separated into its component colors due to refraction and reflection within a material?
Dispersion
Polarization
Diffraction
Interference
Which of the following statements about wave speed is true?
It is determined by frequency and wavelength.
It is independent of the medium through which the wave travels.
It is inversely proportional to amplitude.
It is a scalar quantity.
What is the process by which a material becomes electrically charged when brought in contact with a charged object?
Conduction
Induction
Charging by friction
Polarization
Which of the following statements about electric potential energy is true?
It is a scalar quantity.
It depends on the charge of the object and the distance from another charge.
It is always negative.
It is measured in amperes.
What is the process by which a gas changes into a liquid?
Vaporization
Condensation
Sublimation
Fusion
Which law states that the total momentum of an isolated system remains constant if no external forces act on it?
Newton's First Law of Motion
Newton's Second Law of Motion
Newton's Third Law of Motion
Law of Conservation of Momentum
What is the SI unit of electric potential difference?
Volt
Ampere
Ohm
Watt
What is the process by which a material acquires a positive or negative charge by gaining or losing electrons?
Conduction
Induction
Charging by friction
Polarization
What is the law that states the total electric charge in a closed system is constant?
Coulomb's Law
Ohm's Law
Conservation of Charge
Ampere's Law
What is the SI unit of force?
Watt
Joule
Newton
Volt
Which of the following is a type of nuclear radiation that consists of high-speed electrons or positrons?
Alpha radiation
Beta radiation
Gamma radiation
Neutron radiation
What is the process by which a material becomes magnetized when placed in a magnetic field?
Induction
Magnetization
Polarization
Ferromagnetism
Which law states that the force between two charges is inversely proportional to the square of the distance between them?
Coulomb's Law
Ohm's Law
Gauss's Law
Ampere's Law
What is the SI unit of capacitance?
Farad
Ohm
Henry
Volt
Which of the following statements about nuclear fusion is true?
It releases energy when light nuclei combine to form heavier nuclei.
It is the process that powers stars.
It is a type of radioactive decay.
It involves the emission of beta particles.
What is the SI unit of electric field strength?
Volt per meter
Newton per coulomb
Coulomb per second
Ampere per meter
Which of the following is a fundamental force of nature responsible for holding atomic nuclei together?
Electromagnetic force
Gravitational force
Weak nuclear force
Strong nuclear force
What is the SI unit of magnetic field strength in the CGS system?
Oersted
Tesla per meter
Ampere per meter
Weber
What is the SI unit of electric charge in the MKS system?
Coulomb
Statcoulomb
Ampere
Franklin
What is the SI unit of magnetic flux in the CGS system?
Weber
Gauss
Tesla
Henry
What is the process by which a liquid changes into a gas below its boiling point?
Evaporation
Vaporization
Condensation
Sublimation
What is the unit of electric current in the CGS system?
Ampere
Coulomb
Statampere
Ohm
Which type of energy is associated with the motion of atoms and molecules?
Kinetic energy
Potential energy
Thermal energy
Mechanical energy
What is the phenomenon where light waves oscillate in multiple planes?
Polarization
Diffraction
Dispersion
Interference
What is the unit of angular velocity?
Rad/s
m/s
Hz
Nm
What is the SI unit of magnetic field strength?
Tesla
Weber
Gauss
Ampere