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Ask QuestionPosted by Arnav Aggarwal 5 years, 2 months ago
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Posted by P B Student 5 years, 2 months ago
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Sumaila Ali Choudhary??? 5 years, 2 months ago
Posted by Radha Ujala 5 years, 2 months ago
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Posted by Rishabh Barde 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
| Sl. No. | Differentiating Property | Resistance | Resistivity |
| 1 | Definition | Resistance is the physical property of a substance because of which it opposes the flow of current i.e. electrons. | Resistivity is the physical property of a particular substance which is having particular dimensions. |
| 2 | Proportionality | Resistance is directly proportional to the length and temperature while it is inversely proportional to the cross-sectional area of the material. | Resistivity is only proportional to the nature and temperature of the particular material. |
| 3 | Symbol | R | ρ |
| 4 | Formula | R = V/I or, R = ρ(L/A)V = Voltage, I = Current, ρ = Resistivity |
ρ = (R×A)/L
R = Resistance, L= Length, A = Cross-sectional area |
| 5 | SI Units | The SI unit of resistance is Ohms | The SI unit of resistivity is Ohms-meter. |
| 6 | Applications | The property of resistance is used in several places like heaters, fuses, sensors, etc. | Electrical resistivity measurement is used as a quality control test for calcareous soil. |
Posted by Tae Shah 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
Nawab Salimullah of Dacca proposed the formation of a Muslim political party and on 30th December 1906, a new party was launched at the Dacca Educational Conference. This party was known as the All India Muslim League.
Posted by Gagan Bansal 5 years, 2 months ago
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Yogita Ingle 5 years, 2 months ago
1. Political parties are the most visible instruments of bringing a change in a specific democratic country. Most of the ordinary citizens identify with popular political parties. For example- if we travel to the remote parts or villages of a country and speak to the less educated people, we would come to know that although they do not know anything about the government or the constitution they do identify with party symbols.
2. Political parties are crucial institutions of a democracy which perform a variety of functions in the smooth working of a country. They are composed of leaders, active members, and their followers.
3. Governments at various levels such as the national or state level are formed through the election process wherein different political parties compete to exercise political power.
4. Parties play a crucial role in putting forward their policies and programmes for the welfare of the general public.
5. Political parties are also involved in the process of decision making. Since most of the members of the legislature belong to different parties, they tend to influence decision making by going in the direction of the party leadership.
Posted by Nischay Sharma 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
- The return journey began and Valli was just as excited as the first time.
- She was looking at everything enthusiastically when she suddenly noticed a cow lying dead by the roadside.
- It must have been hit by a fast moving vehicle. Valli confirmed with the conductor that it was the same cow they had seen earlier.
- Her mood experienced a shift towards sadness.
- She wondered how a lovable and playful creature instantly transformed into a horrible and lifeless one
Posted by Paru ? 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
they are called as convergent and divergent mirror:
When parallel light rays fall on the surface of convex mirror then after reflection those rays seem to meet (diverge) at a single point but actually they do not meet. So, it is called diverging mirror.
When parallel light rays fall on the surface of a concave mirror, all the rays after reflection converge(meet) at a single point(focus). Hence, a concave mirror is also called a converging mirror.
Gaurav Seth 5 years, 2 months ago
All the light rays reflected by concave mirror converges at its focus. Hence, concave mirror is also known as converging mirror.
Gaurav Seth 5 years, 2 months ago
|
Concave mirror |
Convex mirror |
|
A spherical mirror whose reflecting surface is curved inwards is called a concave mirror. |
A spherical mirror whose reflecting surface is curved outwards is called a convex mirror. |
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A parallel beam of light falling on this mirror converges at a point after reflection. |
A parallel beam of light falling on this mirror appears to diverge from a point after reflection. |
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It is also called a converging mirror. |
It is also called a diverging mirror. |
|
It has a real focus. |
It has a virtual focus. |
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The magnification of a concave mirror can be greater, equal or less than 1. |
The magnification of a convex mirror is always less than 1. |
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These mirrors are used as reflectors in projectors, light-house headlights, searchlights, etc. |
These mirrors are used as rear-view mirrors in cars and motorcycles, as they enable the driver/rider to view the road and vehicles behind. |
Posted by Anmol And Sarishti 5 years, 2 months ago
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Posted by Aditi Raj 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
AB=square root of((9-9)^2+(6-0)^2)=6
BC=square root of((9-(-9))^2+(6-6)^2)
=square root of (18^2+0)=18
CD=square root of((-9-(-9))^2+(6-0)^2)
=square root of(0+6^2)=6
AD=square root of((9-(-9))^2+(0-0)^2)
=square root of(18^2+0)=18
Since, AB=CD AND BC=AD
THEREFORE, A,B,C,D ARE THE VERTICES OF A RECTANGLE.
Posted by Zakcheng Gabil 5 years, 2 months ago
- 2 answers
Gaurav Seth 5 years, 2 months ago
The Discriminant Formula in the quadratic equation ax2 + bx + c = 0 is
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△ = b2 − 4ac |
- If the discriminant value is positive, the quadratic equation has two real and distinct solutions.
- If the discriminant value is zero, the quadratic equation has only one solution or two real and equal solutions.
- If the discriminant value is negative, the quadratic equation has no real solutions.
Posted by Zakcheng Gabil 5 years, 2 months ago
- 2 answers
Gaurav Seth 5 years, 2 months ago
The Discriminant Formula in the quadratic equation ax2 + bx + c = 0 is
|
△ = b2 − 4ac |
- If the discriminant value is positive, the quadratic equation has two real and distinct solutions.
- If the discriminant value is zero, the quadratic equation has only one solution or two real and equal solutions.
- If the discriminant value is negative, the quadratic equation has no real solutions.
Posted by Pawan Kumari 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
Yes, I would like to become invisible, but only if I could get back to normal. It would be a unique and adventurous experience. I would be able to free people caught in the vicious circle of crime, help the police catch criminals and help the deprived sections of the society. I would not like to convert myself into an invisible creature forever as it would deprive me of all the benefits of being a human and my family and friends.If I take a firm stand as a citizen, I am sure I will be able to do all the things even when visible. It is just about how determined a person is.
Posted by Subhanshu Singh 5 years, 2 months ago
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Japjeet Singh 5 years, 2 months ago
Japjeet Singh 5 years, 2 months ago
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Anjali Singh 5 years, 2 months ago
Preeti 5 years, 2 months ago
Posted by Vaishnavi Chsc 5 years, 2 months ago
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Posted by Chirag Prajapati 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
For the poet, fire means the burning desire for the material things and ice means coldness that emerges in humans because of the desires and materialistic life. He finally concludes that both of these weapons are equally dangerous and will lead the world towards destruction.
Posted by Chirag Prajapati 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
There is no need for ‘fire’ to destroy the world. Even ‘ice’ is sufficient and ‘strong’ enough to cause the destruction of this world. If this world has to ‘perish twice’, then there is no need for fire to destroy it twice. ‘Ice’ is as ‘strong’ and ‘great’ a cause that can cause the end of this world.
Posted by Chirag Prajapati 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
The poet in 'Fire and Ice' confesses that he has 'tasted of desire' which means he has experienced desire and its effects. He has had many worldly desires which he compares to fire and then admits that they have a destructive quality. He speaks from first hand experience.
Posted by Shakir Naik 5 years, 2 months ago
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Posted by Ruhy Sharma 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
Answer: The value of α+β is -5.
Step-by-step explanation:
Since we have given that
Let α and β are the zeroes of the above quadratic equation.
As we know the relation between zeroes and the coefficients of quadratic equation in the form of ax²+bx+c=0.
Hence, the value of α+β is -5.
Posted by Confusion ??? Master ??? 5 years, 2 months ago
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Posted by Kishor Kumar Naik 5 years, 2 months ago
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Pooja Raj Shekar 5 years, 2 months ago
Gaurav Seth 5 years, 2 months ago
An object is placed 10 cm from a convex mirror of radius of curvature 60 cm then find position of image
A n s w e r :
Radius of curvature = 60 cm ; hence focal length f = 30 cm
We have mirror equation : 
where v is image to mirror distance, u is object to mirror distance. we get v = -7.5 cm from above equation.
Hence image is formed at a distance 7.5 cm behhind the convex mirror
Posted by Arnit Raj 5 years, 2 months ago
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Posted by Syed Aahil 5 years, 2 months ago
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Gaurav Seth 5 years, 2 months ago
Solution :
Given: Two resistors with resistances R1=5ohm and R2=10ohm, V=6volt
(a) For minimum current these two should be connected in series. For maximum current these two should be connected in parallel.
(b)In series,
Total resistance = 5+10 = 15ohms
Therefore total current drawn = V/R = 6/15 = 0.4amps
In parallel,
Total resistance R is given as 1/R=1/R1+1/R2
1/R =1/5+1/10
1/R=3/10
R=10/3 ohm
Therefore total current drawn by the circuit = V/R = 6/(10/3) =1.8amps.
Posted by Satyam Rai 5 years, 2 months ago
- 2 answers
Gaurav Seth 5 years, 2 months ago
Ohm’s Law
George Simon ohm(in 1826)studied relationship between I and V across the ends of conductor.
Ohm’s Law states that electric current flowing in a conductor is directly proportional to potential difference across the ends of the conductor,provided temperature and other physical conditions remains constant.
V=IR
R=Resistance of conductor
Resistance of a conductor is the property of conductor to oppose the flow of charge through it.
R = V/I
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Heer Patel 5 years, 2 months ago
2Thank You