The direction of magnetic field lines is always from the north pole to the south pole. If the field lines would cross each other then the direction of field line would change at the point of crossing which is practically impossible. Hence, two magnetic field lines never intersect each other.
The direction of magnetic field lines is always from the north pole to the south pole. If the field lines would cross each other then the direction of field line would change at the point of crossing which is practically impossible. Hence, two magnetic field lines never intersect each other.
Properties of magnetic field lines: (a) Magnetic field lines follow the direction from the north pole to the south pole. (b) Magnetic field lines always show concentric pattern. (c) Magnetic field lines do not cross one another. (d) Closer the field lines; stronger is the magnetic field and vice-verRead more
Properties of magnetic field lines:
(a) Magnetic field lines follow the direction from the north pole to the south pole.
(b) Magnetic field lines always show concentric pattern.
(c) Magnetic field lines do not cross one another.
(d) Closer the field lines; stronger is the magnetic field and vice-versa is also true.
(e) Magnetic field lines are closer near the poles; which shows greater strength of magnetic field near the poles.
The needle of a compass is a small magnet. That’s why when a compass needle is brought near a bar magnet, its magnetic field lines interact with that of the bar magnet. Hence, a compass needle gets deflected.
The needle of a compass is a small magnet. That’s why when a compass needle is brought near a bar magnet, its magnetic field lines interact with that of the bar magnet. Hence, a compass needle gets deflected.
Alveoli 1. Alveoli are functional unit of lungs. 2. A mature lung has about 30 crore alveoli. 3. Alveoli provide a wide surface for gaseous exchange. 4. The exchange of O2 and CO2 takes place through the network of capillaries in alveoli. Nephron 1. Nephrons are functional unit of kidney. 2. A kidneRead more
Alveoli
1. Alveoli are functional unit of lungs.
2. A mature lung has about 30 crore alveoli.
3. Alveoli provide a wide surface for gaseous exchange.
4. The exchange of O2 and CO2 takes place through the network of capillaries in alveoli.
Nephron
1. Nephrons are functional unit of kidney.
2. A kidney has about 10 lakh nephrons.
3. The surface area of a nephron is not much more.
4. The Bowman’s capsule in nephron regulates the concentration of water and salts.
Xylem 1. Xylem conducts water and dissolved minerals from roots to leaves and other parts. 2. In xylem, the transport of material takes place through vessels and tracheids which are dead tissues. 3. In xylem upward movement of water and dissolved minerals is mainly achieved by transpiration pull. IRead more
Xylem
1. Xylem conducts water and dissolved minerals from roots to leaves and other parts.
2. In xylem, the transport of material takes place through vessels and tracheids which are dead tissues.
3. In xylem upward movement of water and dissolved minerals is mainly achieved by transpiration pull. It is caused due to suction created by evaporation of water molecules from the cells of a leaf.
Phloem
1. Phloem conducts prepared food material from leaves to other parts of plant in dissolved form.
2. In phloem, transport of material takes place through sieve tubes with the help of companion cells, which are living cells.
3. In translocation, material is transferred into phloem tissue using energy from ATP. This increases the osmotic pressure that moves the material in the phloem to tissues which have less pressure.
Why don’t two magnetic field lines intersect each other?
The direction of magnetic field lines is always from the north pole to the south pole. If the field lines would cross each other then the direction of field line would change at the point of crossing which is practically impossible. Hence, two magnetic field lines never intersect each other.
The direction of magnetic field lines is always from the north pole to the south pole. If the field lines would cross each other then the direction of field line would change at the point of crossing which is practically impossible. Hence, two magnetic field lines never intersect each other.
See lessList the properties of magnetic field lines.
Properties of magnetic field lines: (a) Magnetic field lines follow the direction from the north pole to the south pole. (b) Magnetic field lines always show concentric pattern. (c) Magnetic field lines do not cross one another. (d) Closer the field lines; stronger is the magnetic field and vice-verRead more
Properties of magnetic field lines:
See less(a) Magnetic field lines follow the direction from the north pole to the south pole.
(b) Magnetic field lines always show concentric pattern.
(c) Magnetic field lines do not cross one another.
(d) Closer the field lines; stronger is the magnetic field and vice-versa is also true.
(e) Magnetic field lines are closer near the poles; which shows greater strength of magnetic field near the poles.
Why does a compass needle get deflected when brought near a bar magnet?
The needle of a compass is a small magnet. That’s why when a compass needle is brought near a bar magnet, its magnetic field lines interact with that of the bar magnet. Hence, a compass needle gets deflected.
The needle of a compass is a small magnet. That’s why when a compass needle is brought near a bar magnet, its magnetic field lines interact with that of the bar magnet. Hence, a compass needle gets deflected.
See lessCompare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.
Alveoli 1. Alveoli are functional unit of lungs. 2. A mature lung has about 30 crore alveoli. 3. Alveoli provide a wide surface for gaseous exchange. 4. The exchange of O2 and CO2 takes place through the network of capillaries in alveoli. Nephron 1. Nephrons are functional unit of kidney. 2. A kidneRead more
Alveoli
1. Alveoli are functional unit of lungs.
2. A mature lung has about 30 crore alveoli.
3. Alveoli provide a wide surface for gaseous exchange.
4. The exchange of O2 and CO2 takes place through the network of capillaries in alveoli.
Nephron
1. Nephrons are functional unit of kidney.
2. A kidney has about 10 lakh nephrons.
3. The surface area of a nephron is not much more.
4. The Bowman’s capsule in nephron regulates the concentration of water and salts.
See lessWhat are the differences between the transport of materials in xylem and phloem?
Xylem 1. Xylem conducts water and dissolved minerals from roots to leaves and other parts. 2. In xylem, the transport of material takes place through vessels and tracheids which are dead tissues. 3. In xylem upward movement of water and dissolved minerals is mainly achieved by transpiration pull. IRead more
Xylem
1. Xylem conducts water and dissolved minerals from roots to leaves and other parts.
2. In xylem, the transport of material takes place through vessels and tracheids which are dead tissues.
3. In xylem upward movement of water and dissolved minerals is mainly achieved by transpiration pull. It is caused due to suction created by evaporation of water molecules from the cells of a leaf.
Phloem
1. Phloem conducts prepared food material from leaves to other parts of plant in dissolved form.
2. In phloem, transport of material takes place through sieve tubes with the help of companion cells, which are living cells.
3. In translocation, material is transferred into phloem tissue using energy from ATP. This increases the osmotic pressure that moves the material in the phloem to tissues which have less pressure.
See less