Who first theoretically predicted the existence of the positron, a positively charged electron?

Who discovered the shell structure of the nucleus?

In Bohr's theory of the atom, what force was responsible for holding the electrons in their orbit?

When a physical property such as charge exists in discrete 'packets' rather than incontinuous amounts, the property is said to be

In Einstein's universe, what is the fourth dimension?

The Millikan experiment showed that electric charge was

The idea that electrons revolved in orbits around the nucleus of an atom without radiating energy away from the atom was postulated by

A law describes the force between two stationary electrically charged objects?

A mass spectrograph directly yields a value for which one of the following?

What element was first discovered in the spectrum of the sun before it was discovered on earth?

Planck's constant was first introduced in order to obtain a correct theoretical prediction of:

The theory which ascribes wave-like properties to particles is called:

What is the name for the phenomenon where electrons are emitted from the surface of a metal when light of a suitable frequency falls on it?

Who established the equivalence of mass and energy through a relation known as mass- energy equivalence relation?

The uncertainty principle in quantum mechanics, proposed by Werner Heisenberg, states that there is an inherent limit to simultaneously knowing the exact values of which two properties of a particle?

Which radioactive isotope is specifically mentioned for use in the treatment of cancer?

Who discovered X-rays in 1895 and was awarded the Nobel Prize for this discovery?

Which effect in quantum mechanics describes the phenomenon where particles can tunnel through potential energy barriers despite lacking sufficient energy to overcome them classically?

Which phenomenon best supports the theory that matter has a wave nature?

What is the energy equivalent of a mass of 1 kilogram?

A quantum of light energy is a

Which determines the number of electrons emitted by a photoelectric material?

The particles in a nucleus are held together primarily by the

The Michelson-Morley experiment was designed to measure

The theory of special relativity

Relative to a stationary observer, a moving clock

Relative to a stationary observer, a moving object

As the speed of a particle approaches the speed of light, the mass of the particle

Which of the following depends on the observer's frame of reference?

What is the SI unit of Planck's constant?

The ratio of energy to frequency for a given photon gives

Planck's constant has a value of

A photon is a particle that

When a photon is scattered from an electron, there will be an increase in its

As a particle travels faster, its de Broglie wavelength

What does Compton effect prove?

What is the uncertainty in momentum position due to?

In an electron microscope, why are energetic particles used?

Modern physics came into existence due to:

All motions are:

A set of co-ordinate axis with respect to which measurements are made is called

An inertial frame of reference is that one:

A non-inertial frame of reference is that one:

The classical physics is based upon the laws of:

According to Maxwell's theory, light consists of:

Light was considered as electromagnetic wave by the scientist

The existence of 'Ether wind' was experimentally rejected by:

In 1905, the theory of relativity was proposed by:

According to Einstein's theory of relativity

Which one of the following is NOT a physical quantity that changes with relativistic speed

If a material object moves with speed of light its mass becomes:

Einstein's mass and energy relation is:

One kilogram mass will be equivalent to the energy:

The relativistic changes in mass, length and time in daily life are not observed because:

The discrete nature of radiation was introduced by:

The electron was discovered by:

An ideal black body is:

As the temperature of black body is raised, the wavelength corresponding to maximum intensity

Planck's concept was used by

Radiations are always emitted or absorbed in the form of packets of energy. This is the statement of:

In 1900, who proposed a formula which explained in detail the whole shape of the black body spectrum for all wavelengths:

Who proposed quantum theory of radiations?

Black body can be made by:

A good absorber of heat radiation would be:

Absorption power of perfect black body is:

Which theory explains that energy exchange takes place in discrete 'bundles' or 'quanta'?

Rest mass of photon is:

Which of the following is a fundamental concept of modern physics that states that the laws of physics are the same for all observers, regardless of their relative motion?

Which phenomenon in modern physics suggests that particles can exhibit both wave-like and particle-like behavior?

What phenomenon, based on the theory of relativity, describes how time appears to move slower for an object moving at high speeds relative to an observer?