Natural and Artificial Magnets NDA Questions

NDA Physics

Natural and Artificial Magnets MCQ Questions


7.
Which of the following materials is not ferromagnetic?
A.
Iron
B.
Cobalt
C.
Nickel
D.
Copper
😑 View Answer Rough Work Error
ANSWER :
D. Copper
8.
Which device uses magnets to convert electrical energy into mechanical energy?
A.
Transformer
B.
Generator
C.
Electric motor
D.
Battery
😑 View Answer Rough Work Error
ANSWER :
C. Electric motor
9.
What is the south-seeking pole of a magnet?
A.
The pole that points towards the Earth's geographical North Pole
B.
The pole that points towards the Earth's geographical South Pole
C.
The center of a magnet
D.
The weakest part of a magnet
😑 View Answer Rough Work Error
ANSWER :
B. The pole that points towards the Earth's geographical South Pole
10.
What is the north-seeking pole of a magnet?
A.
The pole that points towards the Earth's geographical North Pole
B.
The pole that points towards the Earth's geographical South Pole
C.
The center of a magnet
D.
The strongest part of a magnet
😑 View Answer Rough Work Error
ANSWER :
A. The pole that points towards the Earth's geographical North Pole
11.
Which of the following is true for magnets?
A.
They can only attract metals
B.
They can repel and attract certain materials
C.
They have only one pole
D.
They lose their properties over time
😑 View Answer Rough Work Error
ANSWER :
B. They can repel and attract certain materials
12.
How can you increase the strength of a bar magnet?
A.
Cut it into pieces
B.
Rub it with a stronger magnet
C.
Heat it
D.
Cool it
😑 View Answer Rough Work Error
ANSWER :
B. Rub it with a stronger magnet