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प्रश्न
MRI stands for _______.
विकल्प
Magnetic Resonance Imaging
Magnetic Running Image
Magnetic Radio Imaging
Magnetic Radar Imaging
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उत्तर
MRI stands for Magnetic Resonance Imaging.
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संबंधित प्रश्न
You are given a magnet. How will you use it to find north-south direction at a place?
How will you do this?
Explain that a magnet has a certain magnetic field.
Distinguish between the two methods of making artificial magnets.
Select the correct option:
The place around a magnet where its influence can be detected is called:
Fill the blank spaces in the table given below:
| Nature of bar | Action of compass needle | |
| North Pole | South Pole | |
| Non-magnetic | No action | ________ |
| ________ | attracted | attracted |
| North pole of a bar magnet | ________ | _________ |
| ________ | attracted | repelled |
Bar magnets are often stored in pairs as shown in the figure. E and F being pieces of metal.
Name the metal used for E and F.
The figure shows a freely suspended magnet in the rest position. Copy the diagram and on its show:
- Angle of declination
- Angle in dip
Define the term Effective length of a magnet
People who made mariner’s compass for the first time.
Define electromagnet.
