Answer:
Here magnetic field at center does not change, it remains constant .
Explanation:
The magnetic field at the center of the solenoid depends on only the current flowing through the wire and the number of turns of the coil around the solenoid .
Since magnetic field at the center of the solenoid is given by the expression
Here is permeability constant whose value is equal to .
N is number of turns of the coil .
I is current flowing through the coil .
The field lines near the center of the solenoid are approximately parallel , indicating a nearly uniform magnetic field.
H=6cm(height of the object)
D=8cm(distance of the object from the lens)
d=4cm(distance of the image from the lens)
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h=?(height of the image)
(M - magnification)
M = H/D = h/d
H×d=D×h
h=H×d/D
h=6×4/8
h=3cm
The height of the image is 3cm.
Answer:
Reflection
Explanation:
this because water reflects light
When we arrived on the planet .We were nothing but slowly by slowly we we started developing ourselves. Now we all can see that how science has made changes in our daily life .We have steped on the moon .We have discovered many things .For ex.Universe is about 1 million km but we have reached just about 1 cm
Answer:
8hours 16hours and 24 hours
Explanation:
this is because they 24÷3=8 so the time between the takings of the temperature are equal.