Practice Test | Kullabs.com
0%
  • 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
    move in the same path
    pass through the pole
    pass through the focus
  • An image formed by a convex mirror is always ______.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    1 m
    3 m
    1.5 m
    2 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?

    1.5 m
    5 m
    2 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?

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

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

    90o
    25o
    50o
    00
  • 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.

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

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

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

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

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

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

    a luminous
    a transparent
    a translucent
    an opaque
  • 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 ______.

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

    pass through the centre of curvature
    pass through the focus
    retrace its path
    pass through the pole
  • You scored /42


    Take test again