Physics
Grade-10
Easy

Question

What is the SI unit of measurement of refractive index of a medium?

  1. m 
  2. m2 
  3. m/s 
  4. It is unitless 

hintHint:

The refractive index is a dimensionless number. 

The correct answer is: It is unitless 


    The refractive index is unitless.
    • SI unit is a system of internationally accepted units for measurement.
    • The refractive index depends on the speed of light and the density of the medium.
    • The refractive index is defined as the quotient of the speed of light as it passes through two media.
    • Since it is a dimensionless number, it has no SI unit. 

    Related Questions to study

    Grade-10
    Physics

    The refractive index of any medium is ____. 

    The refractive index of any medium is ____. 

    PhysicsGrade-10
    Grade-10
    Physics

    The refractive index of air is ____. 

    The refractive index of air is ____. 

    PhysicsGrade-10
    Grade-10
    Physics

    The speed of light in a vacuum is ______ m/s. 

    The speed of light in a vacuum is ______ m/s. 

    PhysicsGrade-10
    parallel
    Grade-10
    Physics

    The radius of curvature of a convex mirror is taken to be _____.

    the center of curvature and focus lies behind the convex mirror, hence the signs are taken as positive.

    The radius of curvature of a convex mirror is taken to be _____.

    PhysicsGrade-10

    the center of curvature and focus lies behind the convex mirror, hence the signs are taken as positive.

    Grade-10
    Physics

    For an image formed behind a mirror towards the right, the sign for the image distance is _____.

    For an image formed behind a mirror towards the right, the sign for the image distance is _____.

    PhysicsGrade-10
    Grade-10
    Physics

    For an object standing in front of a spherical mirror, the object distance is _____.

    For an object standing in front of a spherical mirror, the object distance is _____.

    PhysicsGrade-10
    parallel
    Grade-10
    Physics

    The height of a virtual and upright image is ____ as per the new cartesian sign convention.

    The height of a virtual and upright image is ____ as per the new cartesian sign convention.

    PhysicsGrade-10
    Grade-10
    Physics

    The height of a real and inverted image is _____ as per the new cartesian sign convention.

    The height of a real and inverted image is _____ as per the new cartesian sign convention.

    PhysicsGrade-10
    Grade-10
    Physics

    Before plugging in the values of various quantities in the expression to calculate the magnification it is important to _____.

    Before plugging in the values of various quantities in the expression to calculate the magnification it is important to _____.

    PhysicsGrade-10
    parallel
    Grade-10
    Physics

    The magnification of the image of an object is found to be 1.25. Which of the following is true about it?

    The magnification of the image of an object is found to be 1.25. Which of the following is true about it?

    PhysicsGrade-10
    Grade-10
    Physics

    An object is placed at a distance of 20 cm from a convex mirror. Its image is formed at a distance of 10 cm from the mirror. The magnification is ____.

    An object is placed at a distance of 20 cm from a convex mirror. Its image is formed at a distance of 10 cm from the mirror. The magnification is ____.

    PhysicsGrade-10
    Grade-10
    Physics

    Which of the following should be taken as negative according to the new cartesian sign convention? (Note: the object is standing in front of a concave mirror.)

    all the given cases show negative signs for a concave mirror.

    Which of the following should be taken as negative according to the new cartesian sign convention? (Note: the object is standing in front of a concave mirror.)

    PhysicsGrade-10

    all the given cases show negative signs for a concave mirror.

    parallel
    Grade-10
    Physics

    The height of a real and inverted image of an object of size 4 cm is 20 cm. The ratio of the image distance and the object distance is _____.

    The height of a real and inverted image of an object of size 4 cm is 20 cm. The ratio of the image distance and the object distance is _____.

    PhysicsGrade-10
    Grade-10
    Physics

    Which of the following should be taken as positive according to the new cartesian sign convention? (Note: the object is standing in front of the mirror along the +y direction.)

    both the height of an object and the height of a virtual and upright image are positive.

    Which of the following should be taken as positive according to the new cartesian sign convention? (Note: the object is standing in front of the mirror along the +y direction.)

    PhysicsGrade-10

    both the height of an object and the height of a virtual and upright image are positive.

    Grade-10
    Physics

    A real image is always _____.

    the real image is always formed as inverted, therefore, for real image height is taken as negative.

    A real image is always _____.

    PhysicsGrade-10

    the real image is always formed as inverted, therefore, for real image height is taken as negative.

    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.