$CATEGORY: Science - Khan Academy/10.Light-Reflection and Refraction/10.Light-Reflection and Refraction--Spherical Mirrors

//Multiple Choice

What type of mirror is a concave mirror? {
    ~Flat mirror
    =Spherical mirror with an inward-curved surface
    ~Spherical mirror with an outward-curved surface
    ~None of the above
}

Which of the following is a property of a concave mirror? {
    ~It always produces virtual images.
    =It can produce real and inverted images.
    ~It only produces images at infinity.
    ~None of the above
}

Convergent rays are\: {
    ~Rays that spread apart after reflection
    =Rays that come together at a point
    ~Parallel rays of light
    ~None of the above
}

The angle of incidence is defined as\: {
    ~The angle between the reflected ray and the normal
    =The angle between the incident ray and the normal
    ~The angle between the incident ray and the mirror
    ~None of the above
}

According to the law of reflection, the angle of reflection is\: {
    ~Always greater than the angle of incidence
    ~Always less than the angle of incidence
    =Equal to the angle of incidence
    ~None of the above
}

At the point of convergence, the intensity of light is\: {
    ~Minimum
    ~Zero
    =Maximum
    ~None of the above
}

The principal focus of a concave mirror is\: {
    =The point where parallel rays converge
    ~The point where the center of curvature lies
    ~The point where all rays reflect in different directions
    ~None of the above
}

//True or False

A concave mirror always produces virtual images. {F}

Convergent rays are those that spread apart after reflecting off a surface. {F}

The angle of incidence is measured between the incident ray and the normal. {T}

The angle of reflection is always equal to the angle of incidence. {T}

At the point of convergence, the intensity of light is at its minimum. {F}

A concave mirror can only form real images. {F}

The principal focus of a concave mirror is located in front of the mirror. {T}

When light rays strike a concave mirror, they reflect away from the focal point. {F}

The distance from the mirror to the focal point is called the radius of curvature. {F}


//******** END **********