OAT Domain 3: Physics Welcome to your OAT Domain 3: Physics 1. OAT: Physics A light ray strikes a reflective surface at an angle of incidence of 45 degrees. What is the angle of reflection? 45 degrees 90 degrees 135 degrees 180 degrees None 2. OAT: Physics A 5 kg object moving with a velocity of 10 m/s collides elastically with a stationary 3 kg object. What is the velocity of the 5 kg object immediately after the collision? 2 m/s 4 m/s 6 m/s 8 m/s None 3. OAT: Physics A car traveling at 20 m/s applies the brakes and stops in 5 seconds. What is the car's acceleration? -4 m/s\(^2\) -20 m/s\(^2\) 4 m/s\(^2\) 20 m/s\(^2\) None 4. OAT: Physics Two waves traveling along the same medium interfere to produce a resultant wave. If the amplitude of the first wave is 3 units and the amplitude of the second wave is 4 units, what could be the maximum possible amplitude of the resultant wave? 1 unit 5 units 7 units 12 units None 5. OAT: Physics A pendulum makes 40 complete oscillations in 60 seconds. What is its frequency? 0.67 Hz 1.5 Hz 2.0 Hz 4.0 Hz None 6. OAT: Physics A transformer has 1000 turns in its primary coil and 100 turns in its secondary coil. If the primary voltage is 120 V, what is the secondary voltage? 12 V 24 V 120 V 240 V None 7. OAT: Physics Light passes from air into water, which has a refractive index of 1.33. If the angle of incidence in air is 30 degrees, what is the angle of refraction in water? 19.47 degrees 22.5 degrees 25.76 degrees 28.07 degrees None 8. OAT: Physics An object is placed 10 cm from a concave mirror with a focal length of 5 cm. What is the nature of the image formed? Real and inverted Real and upright Virtual and inverted Virtual and upright None 9. OAT: Physics A resistor of 8 ohms and a capacitor with a capacitance of 500 microfarads are connected in series across a 50 Hz AC source. What is the impedance of the circuit? 8 ohms 10 ohms 12 ohms 16 ohms None 10. OAT: Physics A block slides down a frictionless incline plane of 30 degrees angle. What is the acceleration of the block? \( g \sin 30^\circ \) \( g \cos 30^\circ \) \( g \tan 30^\circ \) \( g \) None 11. OAT: Physics What is the wavelength of a sound wave traveling at 340 m/s with a frequency of 850 Hz? 0.25 m 0.4 m 0.5 m 0.75 m None 12. OAT: Physics A light beam travels from glass (\( n = 1.5 \)) to air (\( n = 1.0 \)). If the angle of incidence in the glass is 45 degrees, what is the angle of refraction in the air? 48.59 degrees 51.06 degrees 66.42 degrees 70.53 degrees None 13. OAT: Physics A circuit contains a 10 V battery and two resistors (6 ohms and 3 ohms) in parallel. What is the total current flowing through the circuit? 0.5 A 1.0 A 2.0 A 3.33 A None 14. OAT: Physics A gas expands and does 50 J of work on its surroundings while absorbing 70 J of heat. What is the change in internal energy of the gas? 20 J 50 J 70 J 120 J None 15. OAT: Physics A laser emits light with a frequency of \( 5 \times 10^{14} \) Hz. What is the energy of one photon of this light? (Planck's constant \( h = 6.626 \times 10^{-34} \) Js) \( 3.313 \times 10^{-19} \) J \( 3.313 \times 10^{-18} \) J \( 3.313 \times 10^{-20} \) J \( 3.313 \times 10^{-21} \) J None 16. OAT: Physics A 100 Hz sound wave travels through air at a speed of 340 m/s. What is its wavelength? 0.34 m 3.4 m 34 m 340 m None 17. OAT: Physics A parallel-plate capacitor is charged to a potential difference of 100 V and stores a charge of 0.01 C. What is the capacitance of the capacitor? 0.1 F 0.01 F 0.001 F 0.0001 F None 18. OAT: Physics A ball is thrown vertically upward with a velocity of 20 m/s. How high will it go? (Assume g = 10 m/s\(^2\)) 20 m 25 m 30 m 40 m None 19. OAT: Physics A light beam travels from glass (\( n = 1.5 \)) to air (\( n = 1.0 \)). If the angle of incidence in the glass is 45 degrees, what is the angle of refraction in the air? 48.59 degrees 51.06 degrees 66.42 degrees 70.53 degrees None 20. OAT: Physics A 100 Hz sound wave travels through air at a speed of 340 m/s. What is its wavelength? 0.34 m 3.4 m 34 m 340 m None 1 out of 20 Time is Up! Time's up
