Advertisements
Advertisements
प्रश्न
Which one of the following materials cannot be used to make a lens?
पर्याय
Water
Glass
Plastic
Clay
Advertisements
उत्तर
Clay
Explanation:
since it is opaque and does not let light pass through it.
संबंधित प्रश्न
State the power of a lens S.I. unit.
The lens mentioned in 6(b) above is of focal length 25cm. Calculate the power of the lens.
Name the physical quantity whose unit is dioptre.
The focal length of a lens is +150 mm. What kind of lens is it and what is its power?
A converging lens has a focal length of 50 cm. The power of this lens is:
How is the power of a lens related to its focal length?
Find the radius of curvature of the convex surface of a plano-convex lens, whose focal length is 0.3 m and the refractive index of the material of the lens is 1.5.
A normal eye is not able to see objects closer than 25 cm because
The power of the magnifying glass depends on the distance of the magnifying glass from object.
Increase in the converging power of eye lens cause ‘hypermetropia'
