Question
Which lens has more power: a thick lens or a thin lens?
✓
Answer
A thick lens has more power than a thin lens. This is because a thick lens has a larger surface curvature. It has a short focal lengthand that is why it deviates the rays of light at a greater extent.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
For what purpose are transformers used? Can they be used with direct ourrent sourco?
Define moment of force and state its SI unit.
A ball is placed on a compressed spring. When the spring is released, the ball is observed to fly away.
(i) What form of energy does the compressed spring possess?
(ii) Why does the ball fly away?
(i) What form of energy does the compressed spring possess?
(ii) Why does the ball fly away?
If the potential differences between two parts of a thundercloud is $10s V,$
what is the amount of energy given up during the passage of $20$ coulombs?(a)$2x10-7J$
$(b)200J$
$(c)Sx106 j$
$(d)2x 109J$
$(e)2x 1010 J$
→what is the amount of energy given up during the passage of $20$ coulombs?(a)$2x10-7J$
$(b)200J$
$(c)Sx106 j$
$(d)2x 109J$
$(e)2x 1010 J$
A convex lens forms an inverted image of size same as that of the object which is placed at a distance 60 cm in front of the lens. Find : The focal length of the lens
Draw an í- $\delta$ graph for a mono chromatic raY through a glass prism of a plane and mark
(i) $\delta \mathrm{m}$, the angle of mínimum devíation
(ii) Any two values of i for which value of $\delta$ is same.
→(i) $\delta \mathrm{m}$, the angle of mínimum devíation
(ii) Any two values of i for which value of $\delta$ is same.
Slate differences besween $A C$ and DC
→A machine raises a load of 750 N through a height of 16 m in 5s. calculate:
(i) work done by machine,
(ii) power at which the machine works.
(i) work done by machine,
(ii) power at which the machine works.
A meter scale is provided at 10 cm mark and is balanced by suspending 400 g from 0 cm mark (fig. ). Calculate the mass of meter scale.
Differentiate between forced vibrations and resonance.