Physics IQ challenge Trivia Quiz

Answer: Platinum

Paramagnetic elements are those substances which, when kept in a strong magnetic field, become weakly magnetised in the same way as the external field. Other examples are oxygen, lithium and manganese.

Answer: 0

There are no electrons present in the nucleus of this, or any other, uranium atom as the nucleus of any atom consists only of protons and neutrons. Electrons revolve around the nucleus in a fixed orbit.

Answer: 1900

In 1900 Max Planck introduced a totally new idea to explain the distribution of energy among various wavelengths of the black body radiation. He assumed that atoms which emit electromagnetic radiation also absorb the same to maintain a state of equilibrium. His theory was first reported in 1900 to the German Physical Society and published in a paper the following year.

Answer: Tongs

Third class levers are those levers in which effort is located between the load and the fulcrum. Here effort is the force applied by us. Load is the weight on lever and fulcrum is the fixed point around which the lever moves independently. Scissors are an example of a first class lever, where the fulcrum is located between load and effort while lemon squeezers and nut crackers are examples of second class lever, where load is located midway between fulcrum and effort.

Answer: Glass

A dielectric material, or an insulator, is a material in which atoms are tightly bounded to each other so cannot conduct electricity. All non metals, except graphite, are dielectric.

Answer: 672

Rankine is a thermodynamic (absolute) temperature scale named after the Scottish engineer and physicist William John Macquorn Rankine, who proposed it in 1859.The symbol for degrees Rankine is °R. A temperature of −459.67 °F is exactly equal to 0°R. On the Rankine scale, water boils at 672 Rankine and freezes at 492 Rankine.

Answer: Positron

A positron is a fundamental particle which has the same mass as an electron and has an equal and opposite charge to the electron. It has spin opposite to that of an electron. Thus the positron is also known as a positive electron.

Answer: Heat

An adiabatic process is a process that occurs without the transfer of heat or matter between a system and its surroundings. Adiabatic process are exactly defined for a system contained by walls that are completely thermally insulating and impermeable to matter; such walls are said to be adiabatic. An adiabatic transfer is a transfer of energy as work across an adiabatic wall or sector of a boundary. A perfect adiabatic process is not possible as no perfect insulator is available in nature but an approximate adiabatic process is possible.

Answer: K. Onnes

Superconductivity was first discovered by the Dutch physicist K. Onnes in 1911. His experiments found that the resistance of some metals, like mercury, vanished completely when cooled down to a very low temperature. This phenomenon is called superconductivity.

Answer: For measuring the velocity of fluids

The Pitot tube is used for measuring the speed of fluids. It was invented by Henry Pitot in the 18th century and modified by H. Darcy in the 19th century. It is used in aeroplanes and boats to measure the speed of air and water respectvely.