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Tanisha ?? 5 years, 7 months ago
Posted by Sahil A Tripathi 5 years, 7 months ago
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Bhavya Sharma 5 years, 7 months ago
The line x = c
This line is a vertical line passing through point (c, 0) on the graph
For example x = 3 is a vertical line drawn at the point (3, 0
The line y = c
This is a horizontal line passing through point (0, c)
For example y = 4 is a horizontal line drawn at point (0, 4)
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Posted by Ishwar Adv 5 years, 7 months ago
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Sia ? 4 years, 7 months ago
Posted by Pradeepan K Pradeepan 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Potential difference is the difference in electric potential energy between two points. It is the amount of work done in moving a unit positive charge from one point to another point in an electric field. This is measured in volt.
An electric potential at a point in an electric field is the work done by the electric field in moving a unit positive charge from infinity to that point. This is also measured in volt.
Posted by Satyam Sharan Gupta 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Magnification (v/u) = -1 , where v is lens-to-image distance and u is lens-to object distance.
hence we get v = -u
if we substitute v = - u in lens equation (1/v)-(1/u) = (1/f), we get -(1/u) - (1/u) = 1/f or u = -2f
hence if object is placed at a distance 2f, we get magnification of image -1.
Posted by Katha Shukla 5 years, 7 months ago
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Ujjawal Kumar 5 years, 6 months ago
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Posted by Atulendra Mishra 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Reproduction through spores is a type of asexual reproduction. It has several benefits, they are as listed below:
- Spore reproduction is quick and multiplies many at once, hence the population will increase and survival chances are high
- They remain dormant till favourable conditions are available
- As they are light, they can be carried by wind and hence can start growing in different regions
- They possess thick walls which enables them to survive even in unfavourable conditions
- As it is an asexual form of reproduction, there is no error in the copies of new entities produced, hence parental characters are not lost
- They assist the entity to tide over the bad phase
Posted by Disha Yadav 5 years, 6 months ago
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Atulendra Mishra 5 years, 7 months ago
Posted by Aditi Mishra 5 years, 7 months ago
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Bhavya Sharma 5 years, 7 months ago
S10 = a + (n -1) d = 2 + ( 10-1) 5
= 2 + 9 x5 = 2 + 45 = 47
Posted by Disha Yadav 5 years, 6 months ago
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Posted by Chaitanya Thakkar 5 years, 7 months ago
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Kirtika Sharma 5 years, 6 months ago
Ravinder Yadav 5 years, 6 months ago
Gaurav Seth 5 years, 7 months ago
| AUTOTROPHIC NUTRITION | HETEROTROPHIC NUTRITION |
| 1) it means that the organism prepare its own food and is not dependent on any other organism. | 1) it means that the organism does not prepare its own food and dependent on other organism for food. |
| 2) food is prepared from co2 ,water,sunlight. | 2) food cannot be prepared from co2 ,water,sunlight. |
| 3) green plants and certain bacteria have autotrophic mode of nutrition. | 3) all the animals and fungi,most bacteria have heterotrophic mode of nutrition. |
Disha Yadav 5 years, 7 months ago
Posted by Bharam Singh Saini 5 years, 7 months ago
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Posted by Dharambir Dahiya 5 years, 7 months ago
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Gaurav Seth 5 years, 7 months ago
| Tropic movements | Nastic movements |
| These are directional movements of plants in response to stimulus. | These are non-directional movements of plants in response to stimulus. |
| Example: The upward growth of a plant stem in response to sunlight. | Example: The folding up of leaves in response to touch. |
Posted by Surjeet Singh 5 years, 7 months ago
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Bhavya Sharma 5 years, 7 months ago
The story, "A Letter to God" by G.L. Fuentes depicts unwavering faith of a farmer in God. It begins with a farmer, named Lencho expecting for a rain shower to nourish his field of corn. He is confident that his harvest is going to yield him huge profits just like it does every year. To his utmost excitement, rainfall did happen but sooner, it turned into a hailstorm destroying his entire crop field. The damage posed a threat to the family's survival as their entire livelihood was dependent on the year's produce. Although disheartened, the family had robust belief in the almighty. Lencho, despite having worked day and night at the field, knew how to write and thus, decided to write a letter to God explaining his situation and asking for help. He went to town to post his letter addressed "To God". The letter on being noticed by the postmaster, at first amused him, but then motivated him want to do something for the farmer so as to keep his immense belief intact. He contributes from his salary and collects money from his colleagues and friends who willingly contributed for an act of charity. To his dismay, he could only collect 70 pesos which he wrapped in an envelope to make it seem like a reply from the deity. On having found the letter, the writer (Lencho) is not at all shocked, but instead, he gets angry on finding that the amount is less than what he had expected. He again writes a letter to God conveying his disappointment and distrust in the employees of the post office who he thought had stolen the remaining amount.
Posted by ꧁༒RคМคห༒꧂ . 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
| AC can carry and safe to transfer longer distance even between two cities, and maintain the electric power. | DC cannot travel for a very long distance. It does, it loses electric power. |
| The rotating magnets cause the change in direction of electric flow. | The steady magnetism makes DC flow in a single direction. |
| The frequency of AC is depended upon the country. But, generally, the frequency is 50Hz or 60Hz. | DC has no frequency of zero frequency. |
| In AC the flow of current changes its direction backwards periodically. | It flows in a single direction steadily. |
| Electrons in AC keep changing its directions – backward and forward | Electrons only move in one direction – that is forward. |
Posted by Muskan Phogat 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
The reasons favouring shift from hand printing to mechanical printing in China are:
(i) Textbooks of Civil Service Examination were printed in vast numbers under the sponsorship of the imperial state. From the sixteenth century, the number of examination candidates went up and that increased the volume of print.
(ii) By the seventeenth century, print was no longer used just by scholar officials. Merchants used print in their everyday life, as they collected trade information.
(iii) Reading increasingly became a leisure activity. The new readership preferred fictional narratives, poetry, autobiographies, anthologies of literary masterpieces, and romantic plays.
(iv) Rich women began to read, and many women began publishing their poetry and plays. Wives of scholar-officials published their works and courtesans wrote about their lives. The new reading culture was accompanied by a new technology. Western printing techniques and mechanical presses were imported in China and Shanghai became the new hub of the new print culture.
Posted by ꧁༒RคМคห༒꧂ . 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
Trends in the modern periodic table
- The number of shells increases on going down the group.
- The number of valence shell electrons increases with the increase in atomic number on moving from left to right in a period with each period marking the filling of a new electronic shell.
- Atomic size decreases in moving from left to right along a period due to an increase in nuclear charge pulling the electrons closer to the nucleus.
- Addition of new shells down the group increases the distance between the outermost electrons and the nucleus thereby increasing the atomic size down the group.
- Across a period effective nuclear charge acting on the valence shell electrons increases which decreases the tendency to lose electrons. Hence metallic character decreases and non-metallic character increases across a period.
- Down the group, the effective nuclear charge decreases which increases the tendency to lose electrons. Hence metallic character increases and non-metallic character decreases down a group.
Arjun Kashyap 5 years, 7 months ago
Posted by Arjun Kashyap 5 years, 7 months ago
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Yogita Ingle 5 years, 7 months ago
|
Mitosis |
Meiosis |
| Each chromosome replicates. The result is two genetically identical sister chromatids | Chromosomes not yet visible but DNA has been duplicated or replicated |
| Prophase I – crossing-over recombination – Homologous chromosomes (each consists of two sister chromatids) appear together as pairs. Tetrad is the structure that is formed. Segments of chromosomes are exchanged between non-sister chromatids at crossover points known as chiasmata (crossing-over) | Prophase –Each of the duplicated chromosomes appears as two identical or equal sister chromatids, The mitotic spindle begins to form. Chromosomes condense and thicken |
| Metaphase I Chromosomes adjust on the metaphase plate. Chromosomes are still intact and arranged as pairs of homologues | Metaphase -The chromosomes assemble at the equator at the metaphase plate |
| Anaphase I Sister chromatids stay intact. However, homologous chromosomes drift to the opposite or reverse poles | Anaphase – The spindle fibres begin to contract. This starts to pull the sister chromatids apart. At the end of anaphase, a complete set of daughter chromosomes is found each pole |
| Asexual Reproduction | Sexual Reproduction |
| Eukaryotic cells | Diploid cells |
| General growth and repair, Cell reproduction | Genetic diversity through sexual reproduction |
꧁༒RคМคห༒꧂ . 5 years, 7 months ago
Posted by Anushka Negi 5 years, 7 months ago
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Arjun Kashyap 5 years, 7 months ago
Posted by Arjun Kashyap 5 years, 7 months ago
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