MCQS PRACTICE

Select the rest mass of a photon.

Select the unit of a power of lens.

Michelson invented which formula to calculate the speed of light?

_______ is revealed if the diffraction grating is put in the path of light beam.

Select the power of concave lens.

Select the following that demonstrate the wave like characteristics of electron.

How much do the excited atoms take for to return to the ground state ?

Select the law that describes, The energy emitted is proportional to the fourth power of Kelvins temperature.

How can we easily minimize the error in transmission of power through optic fiber?

Select the change in the momentum of each photon, when the photon is throw back or reflected from the mirror

Select the name of the scientist, who invented the equation θ = 1.22 λ/D.

Select the function of the collimator in spectrometer.

Select the refractive index of core and cladding in the multimode step index fiber.

When does the convex lens give a virtual image ?

UV radiation can be manufactured by what ?

Who proposed the name of photon for quantum of light ?

Why do we use energetic particles in an electron microscope?

Select the electric potential energy at a distance rn in an orbit from the positive charge.

Select the least distance for the distinct vision for the normal eye.

What does the Davison-German experiment represent?

What does the Compton effect prove ?

Last/Final image generated by a compound microscope is ________?

Select the critical angle for glass.

Select the series that lies in the ultraviolet region in the hydrogen spectrum.

How does an electron move in the orbit ?

In order to obtain an X-Ray photo of our hand, what principle do we use?

The monochromatic light is exploit on metal surface in a photoelectric effect. Suppose if the exploit light is double the intensity but have the same wavelength then the K.E of emitted electron _____?

Select the minimum distance between the object and its real image in a convex lens.

Michelson used which instrument to calculate the speed of light ?

Select the following postulate that conforms the Rutherford’s Model.

The emitted proton from crystal shows  _________ in Davisson-Germer.

When does the magnifying power of a simple microscope increases?

The unreliability in the position and momentum is due to its ___________?

Select the magnification of astronomical telescope.

What are the Thermions ?

Select the following that is directly proportional to the maximum frequency in the spectrum from X-Ray tube.

The imprisonment of a electron in a box that has radius of 10-14m,then the speed of electron should be ____________?

When does the convex lens act as a diverging lens?

Penetrating power of X-Rays based on their _______?

How can a three dimensional image is produced ?

If a wavelength of photon is 900nm then it acts like a particle of mass _________?

Select the total number of series in hydrogen spectrum.

What does the diameter of lens call ?

Suppose a convex lens of large aperture fails to collect the light rays on it to a single point, then it is said to suffer from __________?

At the time, we excite some atoms by electrical discharge or heat collision then they will _______?

The wavelength corresponding to the maximum intensity ____________, when the temperature of the black body is increased.

What does use for to regenerate the dim light signal in optic fiber transmission system ?

Select the Diopter power of a concave lens of 10 cm focal length.

Select the lens which intersect a beam of parallel rays to a point.

For the common adjustment, length of astronomical telescope is __?