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प्रश्न
Name the lens for which magnification is always less than 1.
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उत्तर
Concave lens.
संबंधित प्रश्न
The speed of light in air is 3 × 108 m s-1. Calculate the speed of light in glass. The refractive index of glass is 1.5
What is a magnifying glass?
Where is the object placed with respect to the principal focus of a magnifying glass, so as to see its enlarged image? Where is the image obtained?
The magnification by a lens is +0.5. Name the lens and state how are u and v related?
The maximum magnifying power of a convex lens of focal length 5 cm can be ______.
What are conjugate foci?
Name the lens for which magnification can be 1. For what position of the object will the magnification be 1?
An erect, magnified, and a virtual image is formed when an object is placed between the optical centre and principal focus of a lens.
(i) Name the lens.
(ii) Draw a ray diagram to show the formation of the image with the above-stated characteristics.
Write an expression for the magnifying power of a simple microscope. How can it be increased?
State two uses of magnifying glass.
