Category: TIFR Previous Year Question Papers 2019 Biology With Answer Key Download

15. If |0 and |1 represent an orthonormal basis for the states of a single qubit, which of the following represents an entangled state of two qubits A and B? […]

14. Which one of the following quantities is invariant under Lorentz transformation? a. Charge density b. Charge c. Current d. Electric field Introduction to Lorentz Invariant Quantities In special relativity, […]

13. A particle of mass m undergoes harmonic oscillations with period T, about x = 0. Now a force F is applied to the particle, acting opposite in direction to […]

12. Note the spring-and-mass arrangement below. With no mass the spring has a rest length x0. Now a mass m is introduced as shown. Which curve in the gray box […]

11. Consider the following “logistic” equation that describes the growth of a population of organisms: 𝑑𝑥/𝑑𝑡 = 𝑥(1 − 𝑥). The stabilities of the fixed (equilibrium) points are: a. 𝑥 […]

10. In a certain process 1.5×105 Joules of heat is added to an ideal gas to keep the pressure at 2.0×105 Pa while the volume expands from 6.3m3 to 7.1m3. […]

9. Standing waves are excited in a 1 m long pipe open at one end, closed at the other. Take the speed of the wave as 340 m/s and calculate […]

8. Two identical bi-convex lenses L1 and L2 are arranged 10 cm apart. A collimated, parallel beam of light strikes L1 from the left and converges 4.3 cm from the […]

7. The voltage measured across a metal bar is plotted as a function of applied current, at two different temperatures (T1 and T2). Which of the following statements is correct? […]

6. You have a system of non-interacting particles that can exist in three possible states, with energy 0, E, 2E (E > 0). At a temperature T = E/kB (where […]