Physics Wave Optics Level: Misc Level
For a beam of light, the direction of polarization is defined as
a.the direction of the electric field,s vibration.
b.the direction of the magnetic field,s vibration.
c.the beam,s direction of travel.
d.the direction that is mutually perpendicular to the electric and magnetic field vectors.
Physics Ray Optics Level: Misc Level
A convex lens is placed on a flat glass plate and illuminated from above with monochromatic red light. When viewed from above, concentric bands of red and dark are observed. What does one observe at the exact center of the lens where the lens and the glass plate are in direct contact?
a.A rainbow of color
b.A dark spot
c.A bright red spot
d.A bright spot that is some color other than red
Physics Wave Optics Level: Misc Level
Consider two diffraction gratings with the same slit separation, the only difference being that one grating has 3 slits and the other 4 slits. If both gratings are illuminated with a beam of the same monochromatic light,
a.both gratings produce the same separation between orders.
b. the grating with 4 slits produces the greater separation between orders.
c.both gratings produce the same separation between orders,but the orders are better defined with the 4- slit grating.
d. the grating with 3 slits produces the greater separation between orders.
Physics Wave Optics Level: Misc Level
In a thin water film in air, there are exactly 80 wavelengths of blue light inside the film. The reflected light from the two surfaces of the film will:
a.Be brightest in the blue part of the spectrum.
b.Have the normal amount of blue light.
c.None of the options.
d.Be deficient in blue light.
Physics Properties Of Matter Level: Misc Level
When the two arms of a U-tube manometer containing mercury are connected to two chambers, the difference in the heights of the mercury in the two arms is 4.5 cm. What is the difference in pressure between the chambers?(Density of mercury=13600 kg/m3 and g=9.8 m/s2)
a.6.0x105 Pa
b.1.0 x104 Pa
c.1.0 x105Pa
d. 6.0 x10 3 Pa
Physics Rotational Mechanics Level: Misc Level
Two wheels with rotational inertias 1.0 kg m2 and 1.5 kg m2 are rotating on the same axis at 20 rad/s and 12 rad/s respectively, in opposite directions. If the wheels are suddenly coupled together, find the common angular speed of the wheels after coupling.
a.0.80 rad/s
b.9.1 rad/s
c.0.40 rad/s
d.0.57 rad/s
Physics Force & Laws Of Motion Level: Misc Level
A 200 g ball hits a wall perpendicularly witha velocity of 30 m/s and rebounds with a velocity of 20 m/s.If the collision lasts for 5 milliseconds, find the average force exerted by the ball on the wall.
a.1000 N
b.4000N
c.6000 N
d.2000 N
Physics Waves And Oscillations Level: Misc Level
A transverse traveling wave is described by the equation y (x,t)=10 sin (8hx+4 xt), where x and y are in meters, and t in seconds. The wavelength and frequency of the wave
a.0.25 m and 2 Hz
b.0.25 m and 0.5 Hz
c. 4 m and 0.5 Hz
d.4 m and 2 Hz
Physics Center Of Mass Level: Misc Level
The coordinates of three particles are (5,7),(0,3), and (-1,-1), If the three particles have masses of 1.0 kg,2.0 kg and 2.0 kg respectively, find the coordinates of the center of mass.
a. (0,6,-2.2)
b.(0.6,2.2)
c.(-0.6,2.2)
d.(-0.6,-2.2)
Physics Measurements Level: Misc Level
What is the percent error in the measurement of 23+-1 m3?
a.43%
b.0.4%
c.4%
d.23%
Physics Waves And Oscillations Level: Misc Level
A sound level of 0 dB corresponds to an intensity of:
a. 10-6 W/m2
b.0 W/m2
c. 10-8 W/m2
d.10-12 W/m2
Physics Circular Motion Level: Misc Level
A 200 g object is moving in a circle of radius 4.0 m at a uniform speed of 6.0 m/s. The net force acting on the object is:
a. 1.8 N away from the center of the circle.
b.1.8 N towards the center of the cirle.
c.3.6 N towards the center of the cirle.
d.3.6 N tangential to the cirle.
Physics Force & Laws Of Motion Level: Misc Level
In a perfectly elastic collision:
a. Momentum and kinetic energy are conserved.
b. Momentum is not conserved but kinetic energy is.
c.Neither momentum nor kinetic energy is conserved.
d.Momentum is conserved but not kinetic energy.
Physics Ray Optics Level: Misc Level
The radius of curvature of a spherical mirror is 32 cm. Rays parallel to the axis of the mirror will be brought into focus at a point that is what distance from th mirror?
a.8.0 cm
b.4.0 cm
c.32 cm
d. 16 cm
Physics Force & Laws Of Motion Level: Misc Level
A car is traveling downhill with a constant velocity. Which of the following statements is true?
a.there is net vertical force acting on the car.
b. The is a net force on the car in the uphill direction.
c.The is a net force acting on the car in the downhill direction.
d. The is no net force acting on the car.
