List of top Physics Questions

The electric field just outside a charged conductor is E. The electric field just inside the conductor is:
The de-Broglie wavelength of an electron moving with a velocity of \(10^7\) m/s is:
True conditions for sustained interference of light waves are:
A. Two interfering sources must be coherent.
B. Two interfering waves must be propagated along the same line.
C. Two interfering waves must have equal amplitude.
D. If the interfering waves are polarized, they must be in the same state of polarization.
Choose the correct answer from the options given below:
A 20g of cane sugar is dissolved in water to make 50 cc of solution. A 20 cm length of tube filled with this solution causes +53\(^{\circ}\)30' optical rotation. What will be the specific rotation?
The Schrodinger wave equation is:
In the steady state of temperature, the flow of heat across the body depends upon its:
A. thermal capacity
B. thermal conductivity
C. temperature difference across its opposite faces
D. thermal resistivity
Choose the CORRECT answer from the options given below:

Match the LIST-I with LIST-II

LIST-I (Energy of a particle in a box of length L)LIST-II (Degeneracy of the states)
A.\( \frac{14h^2}{8mL^2} \)I.1
B.\( \frac{11h^2}{8mL^2} \)II.3
C.\( \frac{3h^2}{8mL^2} \)III.6


Choose the correct answer from the options given below:

The stopping potential for a fast moving photo-electron is independent of:
The electric potential inside a charged conducting sphere is constant. The charge distribution inside the sphere will be:
Fermions have spin value equal to:
Which of the following conditions will lead to Anomalous dispersion?
Arrange the following crystal structures in ascending order of their coordination number.
A. Diamond
B. Sodium Chloride
C. Cesium Chloride
D. Zinc with hexagonal closed packed structure
Choose the CORRECT answer from the options given below:
The lattice constant of a simple cubic lattice having interplanar spacing 3\AA{ for (002) plane is:}

Match the LIST-I with LIST-II

LIST-ILIST-II
A.Compton EffectIV.Scattering
B.Colors in thin filmII.Interference
C.Double RefractionIII.Polarization
D.Bragg's EquationI.Diffraction


Choose the correct answer from the options given below:

The S.I. unit of compressibility is:
If \(|\vec{A}+\vec{B}| = |\vec{A}-\vec{B}|\) then the angle between vectors \(\vec{A}\) and \(\vec{B}\) is:
A conducting sphere of radius R carries a total charge Q. The electric field at a distance r>R from the center is:
Two thin convex lenses of focal lengths 2 cm and 6 cm are separated by a distance of 4 cm in air. Arrange the following cardinal points in ascending order on basis of their distance from second lens:
A. First Principal Point
B. First Focal Point
C. Second Focal Point
D. Second Nodal Point
If an electromagnetic wave is totally reflected, the radiation pressure in terms of average Poynting vector S\(_{av}\) is:
Subtract (29.A)\(_{16}\) from (4F.B)\(_{16}\)
When light ray refracts on entering from one medium to another medium of different refractive indices, it follows:
Moment of inertia of a solid cone about its vertical axis is:
If any two rows (or columns) of a determinant are identical then the value of the determinant is:
The eigen values of matrix \(A\) are 1, -2, 3. The eigen values of \(3I - 2A + A^2\) are:
A. 2
B. 6
C. 8
D. 11
Choose the correct answer from the options given below:

Match the LIST-I with LIST-II

LIST-I (Expressions)LIST-II (Values)
A.\( i^{49} \)I.1
B.\( i^{38} \)II.\(-i\)
C.\( i^{103} \)III.\(i\)
D.\( i^{92} \)IV.\(-1\)


Choose the correct answer from the options given below: