Practice Test | Kullabs.com
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  • If an incident ray passes through the centre of curvature of a spherical mirror, the reflected ray will _______.

    pass between the centre of focus and pole
    pass through the focus
    pass through the pole
    move in the same path
  • An image formed by a convex mirror is always ______.

    real, inverted and diminished
    virtual, real and magnified
    virtual, erect and diminished
    real, erect and magnified
  • The energy that gives us sensation of sight is called ______.

    mechanical energy
    light energy
    potential energy
    electrical energy
  • The individual unit of light is called ______.

    beam
    photon
    gluon
    atom
  • Path of a light beam is ______.

    curved
    parallel to the ground
    depends on medium
    sometimes straight sometimes curved
  •  A light beam can be _______.

    reflected
    sometimes straight sometimes curved
    refracted
    all of the answers are right
  • The spherical mirror whose inner surface is reflective is called ______.

    reflective mirror
    convex mirror
    plain mirror
    concave mirror
  • The concave mirror is also called ______.

    diverging mirror
    converging mirror
    both
    none
  • Convex mirror is also called ______.

    both answers are right
    none are right
    diverging mirror
    conversing mirror
  • The image formed by a concave mirror is ______.

    erect
    real
    bigger
    depends on where it is placed
  • The image formed by convex mirror is ______.

    all of the above answers are right
    inverted
    real
    smaller than object
  • In concave mirror what is the location of the image formed when an object is at infinity?

    in between center of curvature and principal focus
    at the principal focus
    at the center of curvature
    beyond center of curvature
  • In concave mirror what is the location of the image formed when an object is in between infinity and C?

    beyond center of curvature
    in between center of curvature and principal focus
    at the center of curvature
    at the principal focus
  • In concave mirror what is the location of image formed when object is at center of curvature ?

    at the principal focus
    at the center of curvature
    in between center of curvature and principal focus
    beyond center of curvature
  • What is the size of the image when the object is placed at the center of curvature of concave mirror?

    smaller than object
    incomplete information to deduce the answer
    larger than object
    same size of the object
  • The reason for using convex mirror in cars is because ______.

    convex mirror has narrow field of view so it is easier to focus on traffic
    all of the answers are correct
    convex mirror always form an erect image so easy identification of object
    convex mirror forms bigger image so it is easier see the object
  • Light is a form of energy produced by a ______.

    opaque object
    non-luminous object
    luminous object
    transparent object
  • An example for non-luminous object is ______.

    the sun
    the moon
    a candle
    an electric bulb
  • The phenomenon by which the incident light falling on a surface is sent back into the same medium is known as ______.

    Absorption
    reflection
    Polarization
    Refraction
  • When light is incident on a polished surface ______ reflection takes place.

    normal
    irregular
    regular
    diffused
  • An object becomes invisible when it undergoes ______reflection.

    irregular
    diffused
    normal
    regular
  • The image formed by a plane mirror is  ______.

    real and erect
    real and inverted
    virtual and inverted
    real or virtual
  • The centre of the sphere of which the spherical mirror forms a part is called ______.

    focus
    centre of curvature
    pole
    vertex
  • The focus of a concave mirror is _______.

    Real
    undefined
    at the pole
    virtual
  • A converging mirror is known as ______.

    convex mirror
    plane mirror
    concave mirror
    cylindrical mirror
  • Radius of curvature of a concave mirror is always ______ to the mirror.

    inclined at 45o
    Parallel
    perpendicular
    inclined at 60o
  • If the image formed by a concave mirror is virtual, erect and magnified, then the object is placed

    at the focus
    between the pole of the mirror and the focus
    at the centre of curvature
    beyond the centre of curvature
  • Dentists use a _____________ to focus light on the tooth of a patient.

    plane mirror
    cylindrical mirror
    concave mirror
    convex mirror
  • An object is placed 1.5 m from a plane mirror. How far is the image from the person?

    1.5 m
    2 m
    3 m
    1 m
  • An object placed 2m from a plane mirror is shifted by 0.5 m away from the mirror. What is the distance between the object and its image?

    2 m
    5 m
    1.5 m
    3 m
  • What is the angle between the incident and reflected rays when a ray of light is incident normally on a plane mirror?

    90o
    45o
    0o
    180o
  • Name the type of image that can be obtained on a screen.

    Converging
    Diverging
    virtual
    Real
  • A ray of light is incident on a plane mirror and the angle of incidence is 25o. What is the angle of reflection?

    50o
    25o
    00
    90o
  • A ray of light is incident on a plane mirror and the angle of reflection is 50o. Calculate the angle between the incident ray and the reflected ray.

    50o
    100o
    25o
    90o
  • Which of the following is used to make a periscope?

    Concave mirror
    Plane mirror
    Lens
    Convex mirror
  • Which mirror has a wider field of view?

    Cylindrical mirror
    Convex mirror
    Concave mirror
    Plane mirror
  • The focal length of a concave mirror is 15 cm. What is its radius of curvature?

    15 cm
    30 cm
    45 cm
    7.5 cm
  • A ray of light passing through the ______ retraces its path.

    Pole
    centre of curvature
    Focus
    vertex
  • When an object is placed at the focus of a concave mirror, the image will be formed at ______.

    centre of curvature
    pole
    focus
    infinity
  • Butter paper is an example for ______ object.

    an opaque
    a luminous
    a transparent
    a translucent
  • An object of size 2.0 cm is placed perpendicular to the principal axis of a concave mirror. The distance of the object from the mirror equals to the radius of curvature. The size of the image will be ______.

    1.5 cm
    0.5 cm
    2.0 cm
    1.0 cm
  • If an incident ray passes through the centre of curvature of a spherical mirror, the reflected ray will ______.

    pass through the pole
    pass through the centre of curvature
    pass through the focus
    retrace its path
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