NEET TEST SERIES 120 PHYSICS

3. One mole of an ideal gas monoatomic gas undergoes a process described by the equation V²=constant . The heat capacity of the gas during the process is

4. The heat required to raise the temperature of 1 g of O₂ through 1℃ at constant volume is Q. What is the heat required to raise the temperature of 1 g of O₂ through 1℃ at constant pressure?

a) Q+R
b) Q+R/16
c) R-Q
d) Q+R/32

5. The ratio between Bohr radii are

a) 1:2:3
b) 2:4:6
c) 1:4:9
d) 1:3:5

6. Which symbol shows an atom of element having 42 protons, 42 electrons and 65 neutrons

a) ₄₂X¹⁰⁷            
b) ₄₂X⁶⁵             
c) ₄₂X¹⁴⁷
d) ₄₈X¹⁴⁷

7. One requires an energy to remove a nucleon from nucleus and an energy  to remove an electron from an atom. Then

a) E_n = E_e
b) E_n < E_e
c) E_n > E_e
d) E_n ≤ E_e

8. Solids having highest energy level partially filled with electrons are

a) semiconductor
b) conductor
c) insulator
d) Superconductor

9. The following configuration of gate is equivalent to

a) NAND
b) NOR
c) OR
d) None of these

10. Study the circuit shown in the figure. Name the gate that the given circuit resembles.

a) NAND
b) AND
c) OR
d) NOR

11. What is the nature of Gaussian surface involved in Gauss law of electrostatic?

a) Magnetic
b) Scalar
c) Vector
d) Electrical

12. A parallel plate capacitor has a capacitance 50 μF in air and 110 μF when immersed in a oil. The dielectric constant of the oil is

a) 0.4
b) 0.55
c) 1.10
d) 2.20

13. A capacitor of capacitance is charged to a potential V. The flux of the electric field through a closed surface enclosing the capacitor is

14. The current I drawn from the 5 volt source will be

a) 0.33 A
b) 0.5 A
c) 0.67 A
d) 0.17 A

15. A wire of radius and another wire of radius 2r, both of the same material and length are connected in series to each other. The combination is connected across a battery. The ratio of the heats produced in the two wires will be

a) 4.00
b) 2.00
c) 0.50
d) 0.25

16. A magnet of magnetic moment M of length 22 cm is bent into a semicircle. Now the magnetic moment is

a) 11/7 M
b) 7/11M
c) 14M
d) 22M

17. At a certain place, the horizontal component of earth’s magnetic field is  times the vertical component. The angle of dip at that place is

a) 60°
b) 45°
c) 90°
d) 30°

18. The dipole moment of a short bar magnet is 1.25A−m2. The magnetic field on its axis at a distance of 0.5 metre from the centre of the magnet is

a) 0×10⁻⁴Newton/amp-meter
b) 4×10⁻²Newton/amp-meter
c) 2×10⁻⁶Newton/amp-meter
d) 64×10⁻⁸Newton/amp-meter

19. A magnetic field of 2×10⁻²T acts at right angles to a coil of area 100cm² with 50 turns. The average emf induced in the coil is 0.1V, when it is removed from the field in time t. The value of t is

a) 0.1 sec
b) 0.01 sec
c) 1 sec
d) 20 sec

20. Which of the following combinations should be selected for better turning of an LCR circuit used for communication?

a) R=20Ω, L=1.5H, C=35μF
b) R=25Ω, L=2.5H, C=45μF
c) R=15Ω, L=3.5H, C=30μF
d) R=25Ω, L=1.5H, C=45μF