UAF Physics One Liner Questions for Entry Test Preparation Part-1

UAF Physics One Liner Questions for Entry Test Preparation Part-1
UAF Physics One Liner Questions for Entry Test Preparation Part-1

UAF Physics One Liner Questions.UAF Physics One Liner Questions for Post Graduate Entry Test Preparation. UAF Physics One Liner Questions for GRE Test. UAF Physics One Liner Questions for GAT Test.

StatementAnswer
In the equation the nλ=2dsin𝜽 which is called as the Bragg’s equation is the___________________Distance between planes
The Miller indices are the ________________of the values of the intercepts (the unit intercept)Reciprocal
The zone boundaries _________________Group velocity is zero
For the Acoustical branch, at the K=0_________________The two atoms are in phase
In direct transition cannot occur without the involvement of the _______________________Phonon
For the square lattice of the periodicity 1-area of the Brillouin zone is the____________________–4 (pi.pi / a.a)
For the monovalent metal, the radius of the fermi circle is the____________________0.798 pi /a
Which condition is true for the divalent metal_______________?Pi /a < k(F) <1.414 pi /a
For the trivalent metal, the area of the fermi circle is the______________1.38 pi /a
The condition 0 < k(F) <1.414 pi /a is the true____________Body centered cube
Potential inside the metallic crystals___________according to the Kronig Penny ModelArray of square wells
What is the atomic packing factor of the BCC structure______________?0.68
Which of following point defects is the non stoichiometric in the nature__________________?Metal excess defect
Miller indices h, k, and l of the parallel planes in the BCC lattice should satisfy which of following X_ray diffraction reflection rules_________________-?h + k + l should be even
In which of following Bravais lattices, not all the axial angles are the right angles________________?Rhombohedral
At the absolute zero, the boundary that separates the filled and the empty states in the k space is known as the___________-?Fermi surface
In the free electron model, the E k curve is the____________-?Parabolic
The Diffraction is not possible to occur if the wavelength of the X_rays is the__________________Greater than 2d
For the one dimension crystal, the average kinetic energy in the ground state is the________________1/3EF
The effective mass of the electron in the a semiconductor can be the_______________Negative near the bottom of the end
Which type of the defect are point defects____________-?Zero dimensional defect
In the intrinsic germanium at the room temperature the numbers of the__________________Electrons and holes are equal
The Orbits that move from zone to the zone without closing are the_________________Open orbits
The unit cell that contains the lattice points only at the corners is called_________________Primitive unit cell
The Reconstructing Fermi surface on the basis of the empty lattice model is called________________Harrison construction
For the given semiconductor then product of the electron or hole concentration of the given temperature____________Remains constant
In the intrinsic semiconductor, which relation is the correct_______________?E(c) – E(f) = E(g) / 2
In the phase space the electrons occupying in the ground states represents by the_________________Points inside k space
The Frenkel defect belongs to which of following classes______________?Point defect
The Lattice points have another name which is known as the_________________—Lattice site
The Fermi energy level for the P type extrinsic semiconductor lies the__________________Close to the conduction band
The Fermi surface always intersect with the zone boundaries________________Perpendicularly
At the slope of zone boundaries (Both these are correct)
In the ohmic contact, which is the positively charged________________Metal
The intrinsic carrier concentration for the germanium at the 300 K is the_______________–2.4 E19 meter cube
The random motion of the holes and free electrons due to the thermal agitation is known AS the_______________Diffusion
The defect when the ion occupies an interstitial position in the crystal lattice is known as the­______________Frenkel defect
If the mp= mn , then the fermi level is exactly in the____________Middle of the forbidden gap
What is the atomic radius of the BCC crystal structure______________?√3a/2
If the work function of the metal is less than the work function of the n type semiconductor then the contact between them is the___________________Rectifying contact
 Semiconductor, it becomes the_______________N type semiconductor
The axial relationship of the rhombohedral crystal system is given as the_________________a = b = c
Which of following compound shows the both Schottky and the Frenkel defect________________?Silver (I) bromide
If the frequency of the wave is 0.002 Hz then Its time period is the_________________500 s
The Forced vibration are called_________________Driven harmonic vibration
The distance travelled by the disturbance in the one time period is the___________________Wave velocity
The distance covered by the body in one complete vibration is the 20cm. What is the amplitude of the body__________________?5 cm
The Light waves in the vacuum are perfectly the________________-Nondispersive
The Center of the physical pendulum is_______________-1
Md
The Doppler Effect in the sound is the ___________________Echocardiography
The Two coherent sources produce the dark fringe when the phase difference between the interfering waves is n integer_________________ (2n-1) π
Calculate the angular deviation of the third order bright fringes in the radians when light of the wavelength illuminates the two parallel slits 7.7 μm apart_________________-0.215
The position of the Zero order bright fringe in the double slit experiment is ____________________Zero
What is wavelength of the light, if the mirror in interferometer is moved through the 0.233 mm and 792 fringes counted with the light meter___________________?5.88 * 107 m
The power transferred per unit area is equal to the_______________-Intensity of light
Which of following is the electromagnetic wave__________________?Υ rays
The region of electromagnetic spectrum that allows the wavelengths to pass the largely un attenuated through the earth atmosphere is known as the_________________-Optical window
Which of following does not show the interference pattern_________________?Excessively thin film
Which of following is the unique property of the laser_______________-?Coherence
The sound source of the frequency 600 Hz is moving towards an observer with the velocity 20 m/s. The speed of the sound is 340 m/s. The frequency herd by the observer will be the_________________637.5 Hz
The main principle used in the Interference is the_____________Superposition Principle
The displacement of the spectrum to the shorter wavelengths in the light coming from the distant objects moving toward the observer___________________Blue shift
588 the Young’s Double Slit Experiment was conducted in the __________________1801
What kind of the sources are required for the Young’s Double Slit experiment__________________Coherent
The Zero order fringes can be identified using the ________________White light
The Phase difference between the two coherent sources should be the ________________Zero
What will be the wave velocity if the string tension is the 3.6 N and its linear density is 25 g/m ____________________-12 m/s
The average amount of the power transmitted in the medium per unit of its cross sectional area is known as the____________Wave intensity
With the propagation of the longitudinal wave through the material medium, the quantities transmitted in the propagation direction are the______________________Energy
The particle on the trough of the wave at any instant will come to the mean position after the time________________T/4
If the particle is oscillating on the same horizontal plane in the ground _____________________It has both the kinetic and the potential energies
When the two waves of the same amplitude add constructively, the intensity becomes the_________________Four Times
Radial line in the torsional oscillator is known as the_______________Reference line
The loudness of the sound varies directly with the vibrating body’s__________________Amplitude
The human ear responds to the intensities in the range______________10-12Wm-2 to 1Wm-2
What is the frequency of the wave of the wavelength 3.27cm travel with the speed of 243 m/s________________?7431 Hz
In the damped harmonic oscillation which one decreases the_________________?Both amplitude and energy
The contact point between the plano convex lens and the plane glass plate behaves as the_______________Denser medium
Calculate the amplitude for the SHM using the equation x = 3sin2pt + 4cos3pt________________-5
What is the constant of the proportionality of an oscillator if the damping force is directly proportional to velocity_______________?Kg.s-1
What is phase difference between the prongs of the tuning fork_________________?π
Which of following does not the exhibit polarization______________-?Longitudinal wave in a gas
Phase difference between the acceleration of the particle executing simple harmonic motion and the instantaneous velocity is the_____________________Zero
In the simple harmonic oscillation, the acceleration against the displacement for one complete oscillation will be the_________________A straight line
The hollow sphere is filled with the water. It is hung by the long thread. As the water flows out of the hole at the bottom, the period of oscillation will the___________________First increase and then decrease
The X_ray waves, television waves and the radio waves are the examples of the ________________Electromagnetic waves
The material used for the core of the transformer______________Soft Magnetic Materials
The Flow of the electrons is affected by the following_____________Thermal vibrations
Impurity atoms
Crystal defect (All these are correct)
The Conductors have conductivities of the order of the______________107 (Wm)-1
The Area under the stress strain curve is the________________Energy density
The slope of the stress strain curve of the typical ductile material is equal to the___________________Young’s modulus
The bond that exists in the semiconductor is__________________Covalent bond
In the insulators_________________The conduction band is the empty and the valence band is fully filled
The dimension of the stress is similar to the dimension of the__________________Modulus of elasticity
The above Curie temperature iron is the_________________Paramagnetic
The Very weak magnetic signals are detected by the_____________Squid
In the hysteresis loop, the ferromagnetic specimen attains its saturation state of the magnetism at the________________-Peak values of A.C
The magnetic fields produced by the electron in an atom is due to the________________Spin motion (Both these are correct)
Orbital motion
The material with high retentivity and large coercivity is useful to make the___________________Permanent magnet
The Pressure in the fluid depends upon the_______________Depth below the surface
The Schottky defect in the ceramic material is________________Pair of nearby cation and anion vacancies
UAF Physics One Liner Questions

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