10. In the ⁴ He atom, when the 3^rd orbital electron jumps to the 1^st orbit, what is the photon energy being emitted?
(A) 44.2 eV
(B) 48.4 eV
(C) 52.3 eV
(D) 54.1 eV
(E) 60.6 eV

6. Determine the force per unit length between two infinitely long parallel conducting wires carrying currents I1 and I2 in opposite directions. The wires are separated by a distance d. Will the two wires be attracted to each other or repulsed? (A) (B) (C) (D) ? ൌ ఓబூభூమ గௗ , repulsed (E)

7. How many 1 µF capacitors must be connected in parallel to store a charge of 1 C with a potential of 110 V across the capacitors? (A) 7 .1×103 (B) 8 .4×103 (C) 9 .1×103 (D) 10 .2×103 (E) 12.4×103

8. Find the resonance frequency of the following LC circuit?(A) 0.02 Hz (B) 0.04 Hz (C) 0.06 Hz (D) 0.08 Hz (E) 0.10 Hz

9. Find the current of the following circuit. (A) 3.3 A (B) 4.4 A (C) 5.6 A (D) 6.7 A (E) 7.8 A

11. An engine does 15 kJ of work while exhausting 37 kJ to a cold reservoir. What is the efficiency of the engine? (A) 0.15 (B) 0.29 (C) 0.33 (D) 0.45 (E) 1.20

12. A gas undergoing a series of pressure and volume changes from a state (a) to state (b) by the following five paths. Which of the following paths requires the highest work for the changing? (A) I (B) II (C) III (D) IV (E) V

13. The speed of a transverse wave on a string is 170 m/s when the string tension is 120 N. To what value must the tension be changed to raise the wave speed to 180 m/s? (A) 120 N (B) 125 N (C) 130 N (D) 135 N (E) 140 N

14. Which of the following aberrations is related to the wavelength of light? (A) spherical aberration (B) chromatic aberration (C) coma (D) astigmatism (E) distortion

15. An ideal fluid flows through a horizontal pipe whose diameter varies along its length. Measurements would indicate that the sum of the kinetic energy per unit volume and pressure at different sections of the pipe would __________. (A) decrease as the pipe diameter increases (B) increase as the pipe diameter increases (C) increase as the pipe diameter decreases (D) decrease as the pipe diameter decreases (E) remain the same as the pipe diameter changes

16. A point in the wave function where the amplitude is zero defines__________ . (A) the node (B) the excited state (C) the amplitude of the wave function (D) the frequency of radiation (E) none of the above