List of top Physics Questions

When light ray refracts on entering from one medium to another medium of different refractive indices, it follows:
Which of the following conditions will lead to Anomalous dispersion?
Displacement of a particle at any instant of time t is y = 5 sin(100\(\pi\)t + \(\phi\)). The frequency of oscillation of the particle is:
A skater is using very low-friction rollerblades. A friend throws a Frisbee straight at her. In which case does the Frisbee impart the greatest impulse to the skater:
The engine of a rocket in outer space, far from any planet is turned on. The rocket ejects burnt fuel at constant rate. In the first second of firing, it ejects 1/100 of its initial mass at relative speed of 2000 m/s. The initial acceleration of the rocket is:
As water flows from a faucet, stream of water becomes narrower as it descends. The guiding principle for this observation is:
When in a small pond a person in rowboat, throws an anchor overboard, what happens to the water level?
If \(|\vec{A}+\vec{B}| = |\vec{A}-\vec{B}|\) then the angle between vectors \(\vec{A}\) and \(\vec{B}\) is:
The place at which plane of vibration of Foucault's pendulum does not rotate at all, is:
If the torque remains constant while the angle changes, the work done is equal to:
A 1500 kg car traveling east with a speed of 25 m/s collides at an intersection with a 2500 kg van traveling north at a speed of 20 m/s. The direction of wreckage after collision, assuming that the vehicles undergo a perfectly inelastic collision is:
For a force F to be conservative, the relations to be satisfied are:
A. \(\frac{\partial F_y}{\partial x} - \frac{\partial F_x}{\partial y} = 0\)
B. \(\frac{\partial F_z}{\partial y} - \frac{\partial F_y}{\partial z} = 0\)
C. \(\frac{\partial F_x}{\partial z} - \frac{\partial F_z}{\partial x} = 0\)
D. \(\frac{\partial F_y}{\partial x} - \frac{\partial F_x}{\partial y} = \frac{\partial F_z}{\partial y} - \frac{\partial F_y}{\partial z} = \frac{\partial F_x}{\partial z} - \frac{\partial F_z}{\partial x} \neq 0\)
Choose the correct answer from the options given below:
Moment of inertia of a solid cone about its vertical axis is:
If \(\vec{A} = \vec{\nabla} \times \vec{F}\), then \(\oiint_S \vec{A} \cdot \hat{n} dS\) (for any closed surface S) is:
The real and imaginary parts of \(\log(x+iy)\) are:
For the differential equation \(\left(1+\frac{d^2y}{dx^2}\right)^{3/2} = y\frac{d^2y}{dx^2}\) the order, degree and linearity respectively are:
If \(\vec{A}=\vec{\nabla}\phi\) and \(\phi = xy+yz+zx\), then the true statements are:
A. \(\vec{\nabla}\cdot\vec{A}=0\)
B. \(\vec{\nabla}\cdot\vec{A}\neq0\)
C. \(\vec{\nabla}\times\vec{A}=\vec{0}\)
D. \(\vec{\nabla}\times\vec{A}\neq\vec{0}\)
Choose the correct answer from the option given below:
The projection of vector \(\vec{A}=\hat{i}-2\hat{j}+\hat{k}\) on vector \(\vec{B}=4\hat{i}-4\hat{j}+7\hat{k}\) is:

A particle of mass \(m\) is in an infinite square potential of length \(L\). The wave function is superimposed state of the first two energy eigenstates, given by:

\[ \Psi(x) = \sqrt{\frac{1}{3}} \Psi_{n=1}(x) + \sqrt{\frac{2}{3}} \Psi_{n=2}(x) \]
Identify the correct statements: 
A. \( \langle p \rangle = 0 \) 
B. \( \Delta p = \frac{\sqrt{3}h}{2L} \) 
C. \( \langle E \rangle = \frac{3h^2}{8mL^2} \) 
D. \( \Delta x = 0 \) 
Choose the correct answer from the options given below:

Consider the following statements about light:
A. photoelectric effect exhibits wave nature of light.
B. Compton effect exhibits wave nature of light.
C. photoelectric effect exhibits particle nature of light.
D. Compton effect exhibits particle nature of light.
Choose the CORRECT answer from the options given below:
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:
For an even function, the Fourier coefficients are:
A. \(a_0 \neq 0\)
B. \(a_n \neq 0\)
C. \(a_n = 0\)
D. \(b_n = 0\)
Choose the correct answer from the options given below:
In Compton scattering, Compton shift equals Compton wavelength if angle of scattering is:
The de-Broglie wavelength of an electron moving with a velocity of \(10^7\) m/s is: