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प्रश्न
Draw a ray diagram to show the formation of the image, when the object is placed between optical centre and principal focus of a convex lens.
State the signs and values of magnifications in the above mentioned case.
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उत्तर
When an object is placed between the optical center and principal focus of a convex lens:
Since the image formed is virtual and erect, the sign of magnification will be positive. Moreover, the image formed is magnified; therefore, the absolute value of magnification will be greater than one.
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संबंधित प्रश्न
A ray of light is incident normally on a plane mirror. What will be the
angle of reflection?
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
What will be the focal length of this mirror?
State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
Explain the following term:
Incident ray
Draw diagram/diagrams to show them.
Name the kind of mirror used to obtain:
A virtual and enlarged image
Select the correct option:
A concave mirror is made by cutting a portion of a hollow glass sphere of radius 30 cm. The focal length of the concave mirror is:
A concave mirror can be used to produce a parallel beam of light. Draw a ray to illustrate this.
