CSS Physics MCQs 2024

Q1: What is the magnitude of the vector, 12i-8j-24k?

Q2: Moment of inertia of solid sphere is:

Q3: Radial component of velocity for a particle moving in a circular path is:

Q4: The linear thermal coefficient of a solid is less than its volume thermal expansion coefficient by a factor of:

Q5: A body is thrown vertically upwards from the ground with a speed of 980 cm/sec. It will rise to a height of:

Q6: Optically active crystals rotate the:

Q7: A sound source of frequency 600 Hz is moving towards an observer with velocity 20 m/s. The speed of sound is 340 m/s. The frequency herd by observer will be :

Q8: A system consisting of two particles moves on a plane. Then the degree of freedom is:

Q9: Projection of vector A in the direction of x-axis is represented by the angle of:

Q10: When the movable mirror of a Michaelson Interferometer is shifted through 0.0589 mm, 200 fringes cross the field(D) What is the wavelength of the light?

Q11: The frequency of 2nd pendulum is:

Q12: A skater moves with a constant velocity of 12km/s. If her momentum is 600kgm/s, what is its mass?

Q13: The escape velocity from the surface of the earth is approximately equal to:

Q14: The value of relative permittivity for all the dielectrics is:

Q15: When travelling wave is a sin or cos function of (x+Vt) is called:

Q16: A particle on the trough of a wave at any instant will come to the mean position after a time:

Q17: The efficiency of a heat engine working between the freezing point and boiling point of water is:

Q18: Wavelength of an incident light when it is incident normally on a diffraction grating, having 3000 lines per centimeter and angular separation of 10° is:

Q19: Which of the following have highest value of surface tension?

Q20: The dimensions of work are:

Q1: A Gaussian surface in the form of a cylinder of radius & immersed in a uniform electric field with the cylinder axis parallel to the field. What is the flux of the electric field through this closed surface?

Q2: Differential form of Gauss\'s law in magneto statics is:

Q3: Which of the following is the correct expression for the group velocity?

Q4: The Eigen value of a particle in a box is:

Q5: The probability of finding an electron is uniform in every direction is in which orbital?

Q6: The degeneracy of the first excited state (or a state with symmetry permutation) for a particle in a three-dimensional cubic box of length L is typically:

Q7: In an electromagnetic wave in free space, the root mean square value of the electric field is 6 V/m. The peak value of the magnetic field is:

Q8: An alpha particle having energy 5MeV entering the proportional counter with capacity of 25 pf. The ionization potential will be ~ 15 eV. The resultant pulse height will be close to:

Q9: A parallel plate capacitor is charged by connection to a battery. If the battery is disconnected and the separation between the plates is increased, what will happen to the charge on the capacitor and the voltage across it?

Q10: A hollow metal sphere of radius R is positively charged. Of the following distances from the centre of the sphere, which location will have the greatest electric field strength?

Q11: Two parallel conducting plates are connected to a constant voltage source. The magnitude of the electric field between the plates is 2,000 N/C. If the voltage is doubled and the distance between the plates is reduced to 1/5 the original distance, the magnitude of the new electric field is:

Q12: An isolated capacitor with air between its plates has a potential difference Vo and a charge Q. After the space between the plates is filled with oil, the difference in potential is V and the charge is Q. Which of the following pairs of relationships is correct?

Q13: A positive charge of 3.0 × 10 C is placed in an upward directed uniform electric field of 4.0 × 10°N/C. When the charge is moved 0.5 meter upward, the work done by the electric force on the charge is:

Q14: A conducting sphere of radius R carries a charge Q. Another conducting sphere has a radius R/2 but carries the same charge. The spheres are far apart. The ratio of the electric field near the surface of the smaller sphere to the field near the surface of the larger sphere is most nearly to:

Q15: If the only force acting on an electron is due to a uniform electric field, the electron moves with constant:

Q16: An ion with charge q, mass m, and speed v enters a magnetic field B and is deflected into a path with a radius of curvature R. If a second ion has speed 2v, while m, q, and B are unchanged, what will be the radius of the second ion\'s path?

Q17: The Ampere law is based on which theorem?

Q18: (Added) In the Compton effect, the shift in wavelength ($\\Delta \\lambda$) is maximum when the scattering angle is:

Q19: (Added) Which of the following is used as a moderator in a nuclear reactor?

Q20: (Added) The logic gate that gives a High output (1) only when both inputs are different is: