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Specify the visible range of the electromagnetic radiation:

• 12 nm – 380 nm

• 380 nm – 1 nm

• 380 nm – 760 nm

• less than 760 nm

• More than 780 nm

Body weight:

• It is equal to gravity provided rapid upward motion of the body.

• It is equal to gravity provided accelerated downward movement of the body.

• It is equal to the force of gravity when the body is resting on a fixed support

• Body weight is the force of Archimedes.

• The body weight is equal to the elastic force.

The buoyant force effected on a body immersed in a fluid or gas:

• Equal to the weight amount of liquid in the submerged part of the body

• Equal to the body weight in the gas

• Equal to the body weight in air

• Equal to the weight of the submerged part of the body

• Equal to the body weight in liquid

Diffraction of light:

• The rectilinear propagation of electromagnetic waves in any medium.

• Rounding by the waves of obstacles encountered in their way.

• Strengthening or weakening of the intensity of light at imposing more coherent waves.

• The phenomenon of the separation of the intensity of light at the superposition of two or more coherent waves.

• The reduction or increase of the amplitude of the light at a meeting of several coherent beams at one point the space.

Methods for monitoring the interference of light:

• Wheatstone method

• Stokes method

• Method Jung zones

• Poiseuille method

• Fresnel biprism

Electric current is any direction of travel of:

• Uncharged particles

• Neutrons

• Molecules

• The electric charge

• Atoms

The electric field produced by stationary electric charges:

• Characterized by intensity of the field

• Electromagnetic field

• The magnetic field

• Obey the Lenz rules

• There is just in a diamagnetic medium

The definition of kinetic energy:

• Kinetic energy is vector quantity.

• Kinetic energy is the energy an object attains due to its position.

• The kinetic energy of an object having mass m and height.

• The energy of an object due to its motion.

• Kinetic energy is defined as the product of the force applied upon an object.

The examples of first class levers:

• Bottle opener.

• Nutcracker.

• Equal-arm balances

• Wheelbarrow.

• Sugar tongs.

Fermions are:

• Electrons

• Atoms

• Molecules

• Graviton

• Quasiparticles