1. We’ll start with a potted plant like a croton, which has partially green and partially white leaves. Chlorophyll is present in the green portion of the leaf, but not in the white portion.
2. Destarch the leaves of this plant by placing it in a completely dark environment for three days.
3. Remove the potted plant from its dark environment and set it in direct sunlight for three to four days.
4. Remove the variegated leaf from the plant, boil it in water for a few minutes, and then boil it in alcohol to remove the green colour ‘chlorophyll’. The leaf’s green sections get discoloured. As a result, we have decolorized leaf.
5. Soak the decolorized leaf in hot water for a few minutes to soften it and remove any remaining chlorophyll.
6. Pour the iodine solution over the colourless leaf and see how it changes colour.
7. When we add iodine solution to the outer section of the leaf that was initially white (without chlorophyll), it does not become blue-black, indicating that there is no starch in this part of the leaf. We can deduce from this data that photosynthesis for the production of starch does not occur without chlorophyll.
With the help of an experiment show that chlorophyll is essential for photosynthesis.
With the help of an experiment show that chlorophyll is essential for photosynthesis.
.
)
west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points above the horizontal. The horizontal component of the earth’s field is measured to be 
Specify the direction and magnitude of the earth’s field at the location.At a certain location in Africa, a compass points 
and 
carrying currents of 
and 
in the same direction are separated by a distance of 
. Estimate the force on a 
section of wire A.
wire carrying a current of 
is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 
. What is the magnetic force on the wire?
and making an angle of 
with the direction of a uniform magnetic field of 
. What is the magnitude of the field 
at a point 
from the wire?
-turns carrying current 
.
is at distance 
from the wire. Find the force acting on the electron if its velocity is directed towards the wire.