Tuesday, August 27, 2024
Electromagnetic Induction _BSc
Sunday, August 25, 2024
Activity 1 : Faraday's Law
[to be done in practical sheets]
Activity 1: TO STUDY FARADAY LAW OF ELECTROMAGNETIC INDUCTIONS.N | Action | Observation | Remarks |
1 | Magnet inserted in the coil | Field lines changes in the coil | Deflection occurs |
2 | Magnet kept at rest inside the coil | Field lines doesn't change | Deflection doesn't occurs |
3. | Magnet taken out from coil | ……………….. | ……………………. |
Result 1. ………………………………………………………………………………….
S.N | Action | Observation | Remarks |
1 | North pole of magnet inserted in coil | Deflection is in ........(right/left) side | Current in induced in one direction |
2 | South pole of magnet inserted in coil | Deflection is in ........ side | Deflection occurs in opposite direction |
S.N | Action | Observation | Remarks |
1 | Magnet moved slowly | Deflection is ......... unit | .........(more/less) current is induced |
2 | Magnet moved quickly | Deflection is .......unit | ........(more/less) current is induced |
S.N | Action | Observation | Remarks |
1 | Magnet moved in coil of less turn | Deflection is ......... unit | .........(more/less) current is induced |
2 | Magnet moved in coil of more turns | Deflection is .......unit | ........(more/less) current is induced |
Wednesday, June 5, 2024
Meiosis
Meiosis Cell Division
Prophase-I occurs over a long duration and involves several complicated changes in meiotic cell division. It is important because genetic recombination and variation in sexually reproducing organism occurs due to the events of this phase.
Leptotene
(i) The chromatin network opens out and threads become clear.
(ii) The chromosomes are thin, slender and long.
(iii) Chromosome number is diploid.
Zygotene
(i) Corresponding chromosomes become intimately associated.
(ii) The process of pairing is known as synapse. It is so exact that pairing is not merely between corresponding chromosomes but between corresponding individual units.
(iii) The chromosomes become shorter and thicker.
Pachytene or Pachynema
(i) The synaptic chromosomes become very intimately associated.
(ii) The pair of chromosomes becomes short and thick.
(iii) Crossing over occurs at this stage. Chiasmata are clearly seen.
Diplotene
(i) Homologous chromosomes start separating from one another.
(ii) Chiasmata tend to slip out of the chromosomes. This is known as terminalisation of chiasmata.
(iii) Chromosomes start separating out but the separation is not complete.
(iv) Nuclear membrane and nucleolus start disappearing.
Diakinesis
(i) The bivalents condense further and get randomly distributed.
(ii) The separation of paired chromosomes is almost complete.
(iii) Terminalisation of chiasmata is almost complete.
(iv) Nuclear membrane and nucleolus disappear.
Wednesday, May 8, 2024
Thursday, March 14, 2024
English Listining Nine
Welcome, You will find here the study materials of class 9
English
Chapter 1
Chapter 2
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Chapter 10
Chapter 11
Chapter 12
Chapter 13
Chapter 14
Chapter 15
Chapter 16
Chapter 17
Chapter 18
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