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Temperature above which a ferromagnetic substance becomes paramagnetic is called
 

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Important Questions on Matter and Magnetism

EASY
KCET (UG)
IMPORTANT
Physics Crash Course KCET (UG)>Chapter 26 - Matter and Magnetism>Exercise 1>Q 120
A ferromagnetic material is heated above its Curie temperature. Which one is a correct statement?
 
EASY
KCET (UG)
IMPORTANT
Physics Crash Course KCET (UG)>Chapter 26 - Matter and Magnetism>Exercise 1>Q 121
Which of the following is most suitable for the core of electromagnets?
 
EASY
KCET (UG)
IMPORTANT
Physics Crash Course KCET (UG)>Chapter 26 - Matter and Magnetism>Exercise 1>Q 122
Core of electromagnets are made of ferromagnetic material which has
EASY
KCET (UG)
IMPORTANT
Physics Crash Course KCET (UG)>Chapter 26 - Matter and Magnetism>Exercise 1>Q 123
The use of study of hysteresis curve for a given material is to estimate the
 
EASY
KCET (UG)
IMPORTANT
Physics Crash Course KCET (UG)>Chapter 26 - Matter and Magnetism>Exercise 1>Q 124
When a ferromagnetic material is heated to a temperature above its Curie temperature, the material
 
HARD
KCET (UG)
IMPORTANT
Physics Crash Course KCET (UG)>Chapter 26 - Matter and Magnetism>Exercise 1>Q 125
A bar magnet having coercivity 4×103 A m-1 is demagnetised by inserting it inside a solenoid 10 cm long and having 50 turns. The current that should be sent through the solenoid is
 
EASY
KCET (UG)
IMPORTANT
Physics Crash Course KCET (UG)>Chapter 26 - Matter and Magnetism>Exercise 1>Q 126
How does the magnetic susceptibility X of a paramagnetic material change with absolute temperature T?
EASY
KCET (UG)
IMPORTANT
Physics Crash Course KCET (UG)>Chapter 26 - Matter and Magnetism>Exercise 1>Q 127
The hysteresis loop for the material of a permanent magnet is :