Mock Test

Exam: RRB Group D Subject: General Science Topic: Physics

Total Questions: 20

Q1. When is work done by a force equal to zero?

When force is applied and displacement is in the same direction When there is no displacement When displacement is perpendicular to the force When force is applied and displacement is in opposite direction
Q2. The Q factor of a series resonant circuit is defined as:

The ratio of inductive reactance to resistance at resonance. The ratio of capacitive reactance to resistance at resonance. The ratio of voltage across the inductor or capacitor to the applied voltage at resonance. The ratio of resistance to inductive reactance at resonance.
Q3. The Big Bang nucleosynthesis (BBN) predictions for the abundance of Helium-4 are highly sensitive to the neutron-to-proton ratio at the time of nucleosynthesis. What cosmological parameter influences this ratio significantly?

The Hubble constant The density of dark energy The baryon-to-photon ratio The spectral index of primordial density fluctuations
Q4. A machine does 1000 J of work in 10 seconds. What is its power?

10 W 100 W 1000 W 10000 W
Q5. Which principle states that pressure applied to an enclosed fluid is transmitted undiminished to every portion of the fluid and the walls of the containing vessel?

Archimedes' Principle Boyle's Law Pascal's Principle Newton's Law of Gravitation
Q6. The Cosmic Microwave Background (CMB) radiation is considered evidence for:

The formation of the first stars. The existence of dark matter. The Big Bang. The unification of fundamental forces.
Q7. What does astrochemistry tell us about the formation of stars and planets?

Stars and planets form instantaneously The presence of certain molecules influences the collapse of gas clouds Planetary systems only form around very old stars All stars have identical planetary systems
Q8. The process of beta decay involves the transformation of a neutron into a proton, an electron, and an antineutrino. This is an example of a process governed by the:

Strong nuclear force Electromagnetic force Weak nuclear force Strong and weak nuclear forces
Q9. Which force is currently not fully integrated into a QFT framework?

Electromagnetic force Strong nuclear force Weak nuclear force Gravitational force
Q10. The phenomenon of 'photoelectric effect' is explained by:

Wave nature of light Particle nature of light Both wave and particle nature Polarization of light
Q11. Which thermodynamic process is characterized by zero heat transfer (Q=0)?

Isothermal Isobaric Isochoric Adiabatic
Q12. The lens that is thicker in the middle and thinner at the edges is a:

Concave lens Convex lens Cylindrical lens Prism
Q13. The Schrödinger equation is a fundamental equation in quantum mechanics that describes how the quantum state of a physical system changes over time. It is analogous to which law in classical mechanics?

Newton's laws of motion Hamilton's equations Lagrangian mechanics Conservation of energy
Q14. The acceleration of a particle in SHM is given by a = -ω²y. What is a when y = 0?

Maximum acceleration Zero acceleration Half of maximum acceleration Constant acceleration
Q15. The concept of 'abiogenesis' refers to:

The evolution of complex multicellular life The spread of life through space The origin of life from non-living matter The extinction of species
Q16. The rest energy of a particle with mass m₀ is given by:

m₀v² ½m₀v² m₀c² m₀²/c
Q17. Which planet is known for its prominent rings?

Jupiter Uranus Saturn Neptune
Q18. Which of the following is a consequence of Special Relativity?

Gravity Black holes Time dilation The expansion of the universe
Q19. What is the condition for constructive interference of two waves?

Phase difference is (2n+1)π, where n is an integer Phase difference is 2nπ, where n is an integer Path difference is nλ, where n is an integer Path difference is (n + 1/2)λ, where n is an integer
Q20. A process in which no heat is transferred into or out of the system is called:

Isothermal Isobaric Adiabatic Isochoric

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