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# Eleventh Grade (Grade 11) Physics Questions

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Grade 11 Forces and Motion
When an object is in free fall
1. its speed stays the same
2. it decelarates
3. it accelerates
4. none of the above
Grade 11 Forces and Motion
A scalar has
1. magnitude and direction
2. velocity
3. only direction
4. only magnitude
Grade 11 Light and Optics
Grade 11 Forces and Motion
When no horizontal force acts on a projectile, the horizontal velocity
1. remains constant
2. increases
3. decreases
4. equals zero
Grade 11 Light and Optics
Grade 11 Forces and Motion
The speed at any given time is called the
1. velocity
2. average speed
3. instantaneous speed
4. all of the above
Grade 11 Forces and Motion
Grade 11 Forces and Motion
The resultant of two perpendicular vectors is the
1. diagonal of a rectangle constructed with the two vectors as sides
2. difference of the two vectors
3. two vectors added together
4. area of a rectangle constructed with the two vectors as sides
Grade 11 Forces and Motion
Grade 11 Light and Optics
When an image is reflected off a concave mirror, how does the image appear to the eye?
1. The image is magnified because a concave mirror is divergent.
2. The image is magnified because a concave mirror is convergent.
3. The image is reduced because a concave mirror is divergent.
4. The image is reduced because a concave mirror is convergent.
Grade 11 Quantum Physics and the Atom
Rydberg’s constant is expressed in the formula:
1. $(h^2)/((m_e)(e^2)(k_e))$
2. $((2pi^5)(k_B^4))/((15h^3)(c^2))$
3. $((e^2)(k_e))/(2alpha_0)$
4. $((m_e)(e^4))/((8)(epsilon_0)^2(h^3)(c))$
Grade 11 Forces and Motion

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Grade 11 Forces and Motion
Grade 11 Forces and Motion
If a net force diagram is drawn, such as shown below, wherein the $F_"norm"" at A "=-(F_g)" at C"$, what do you know about the object?
1. The object is accelerating in the direction of the $F_"app"" at B"$ because there is no opposing force to B, and $F_"app"" at "B>0N$.
2. The object is accelerating in the opposite direction of $F_"app"" at B"$ because forces act in equal but opposite pairs.
3. The object is not moving because the $F_"net"=F_"norm"+F_g=0N$.
4. The object is accelerating in the direction of the $F_"app"" at B"$ because the opposing $F_"fric"$ must be negligible, and $F_"app"" at "B>0N$.
Grade 11 Waves and Sound
Which one of the following factors determines the pitch of a sound?
1. the amplitude of the sound wave
2. the distance of the sound wave from the source
3. the frequency of the sound wave
4. the wavelength of the sound wave
Grade 11 Light and Optics
Which statement best explains the difference between light waves traveling through a vacuum and light waves traveling through a medium?
1. Light waves traveling through a vacuum are transverse, but light waves traveling through a medium are longitudinal.
2. Light waves traveling through a vacuum travel faster than light waves traveling through a medium.
3. Light waves traveling through a vacuum have no mass, but light waves traveling through a medium have a mass greater than zero.
4. Light waves traveling through a vacuum have a shorter wavelength than light waves traveling through a medium.
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