Advertisements
Advertisements
प्रश्न
What is the nature of a lens having a power of + 0.5 D?
उत्तर
Positive sign indicates it is a converging lens. Therefore, the lens is convex.
APPEARS IN
संबंधित प्रश्न
State power of a lens S.I. unit.
Find the power of a concave lens of focal length 2m.
You have two lenses A and B of focal lengths +10 cm and –10 cm, respectively. State the nature and power of each lens. Which of the two lenses will form a virtual and magnified image of an object placed 8 cm from the lens? Draw a ray diagram to justify your answer
A combination of lenses for a camera contains two converging lenses of focal lengths 20 cm and 40 cm and a diverging lens of focal length 50 cm. Find the power and focal length of the combination.A optical instrument in which the above arrangement of convex lens is used is a convex lens used to burn paper by focusing sunlight.
A diverging lens has a focal length of 0.10 m. The power of this lens will be:
How does the power of a lens change if its focal length is doubled?
A thin converging lens is formed with one surface convex and the other plane. Does the position of image depend on whether the convex surface or the plane surface faces the object?
The power of a lens is +2.0 D. Find its focal length and state the kind of lens.
A convex lens is of focal length 20 cm. Find its power.
The power of lens depends on the focal length of the lens
