CSS Physics MCQs 2021

Q1: The gradient of a scalar point function is a:

Q2: Torque is defined as the _____ product of position vector and force.

Q3: A body is in equilibrium if:

Q4: The value of \'g\' (acceleration due to gravity) is maximum at:

Q5: Work done by a conservative force around a closed path is:

Q6: The equation of continuity (A_1V_1 = A_2V_2) is based on the law of conservation of:

Q7: Viscosity of gases _____ with rise in temperature.

Q8: In an isothermal process, the internal energy of an ideal gas:

Q9: The change in entropy (ΔS) for a reversible adiabatic process is:

Q10: The theoretical efficiency of a petrol engine is approximately:

Q11: Doppler effect is independent of:

Q12: The bending of light around the corners of an obstacle is called:

Q13: In a fiber optic cable, the signal travels due to:

Q14: The fringe width in interference pattern is given by:

Q15: A Michelson Interferometer can be used to measure:

Q16: According to Einstein, the rest mass of a photon is:

Q17: Time dilation means that a moving clock runs:

Q18: The escape velocity from the Earth\'s surface is:

Q19: Unit of Magnetic Field Strength (H) is:

Q20: Which modulus of elasticity is associated with change in shape (shear)?

Q1: Gauss\'s Law relates electric flux with:

Q2: A dielectric is introduced between the plates of a capacitor to:

Q3: The force on a current-carrying conductor in a magnetic field is maximum when the angle between conductor and field is:

Q4: Lenz\'s Law is a consequence of the law of conservation of:

Q5: The phase difference between voltage and current in a pure inductive circuit is:

Q6: The resonant frequency of an RLC series circuit is:

Q7: In a step-up transformer, the output current is:

Q8: The majority charge carriers in P-type material are:

Q9: Which impurity is added to Germanium to form N-type semiconductor?

Q10: A transistor works as an amplifier in:

Q11: The input impedance of an ideal Op-Amp is:

Q12: In Photoelectric effect, the number of emitted electrons depends on:

Q13: Compton shift (Δλ) is maximum when scattering angle is:

Q14: Pair Production occurs only when the photon interacts with:

Q15: The half-life of a radioactive substance is the time in which:

Q16: Alpha particles are essentially:

Q17: Which series of Hydrogen spectrum is in the Infrared region?

Q18: Nuclear fusion requires:

Q19: The logic gate that produces HIGH output only when both inputs are HIGH is:

Q20: 1 Atomic Mass Unit (amu) is equal to: