Related Questions

The length of a rectangular field F is 3 km greater than the side of a square field M , and the width of field F is 3 km less then the side of field M. If the area of field M is m2 square km, what is the area of field F?
A m2 +6
B 6
C m2 - 6
D m2 +9
Superconducting metal in super conducting state has relative permeability of
A Zero
B One
C Negative
D More than one
A farmer has two rectangular fields. The larger field has twice the length and four times the width of the smaller field. If the smaller field has area K, then the area of the largest field is greater than the area of the smaller field by what amount?
A 4K
B 6K
C 7K
D 8K
A farmer has two rectangular fields. The larger field has twice the length and four times the width of the smaller field. If the smaller field has area K, then the area of the larger field is greater than the area of the smaller field by what amount ?
A 2K
B 5 K
C 6K
D 7K
The elements which become superconducting at extremely low temperatures are
A Good conductors at room temperature
B Ferromagnetic at room temperature
C Relatively poor conductors at room temperature
D Insulators at room temperature
The permeability of a core material is an indication of the ability of the material to establish a magnetic field.
A True
B False
A farmer has two rectangular fields. The larger has twice the length and four times the width of the smaller field. If the smaller field has area k, then the area of the larger field is greater than the area of the smaller field by what amount?
A 2k
B 6k
C 7k
D 8k
A farmer has two rectangular fields. The larger field has twice the length and four times the width of the smaller field. If the area of the smaller field is K units, what is the area of the larger field?
A 2K
B 6K
C 7K
D 8K
A farmer has two rectangular field. If the smaller field has area K, then the area of the larger field is greater than the area of the smaller field by what amount?
A 2K
B 7K
C 8K
D 12K
How does the magnetic compass needle behave in a magnetic field?
A It assures a position right angle to magnetic field
B It starts rotating
C It assures a position which follows a line of magnetic flux
D None of the above

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