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AIDS orAcquired Immunodeficiency Syndromeis a communicable disease caused by HIV OR Human Immunodeficiency virus.It is transferred through sexual contact. Actually it is weakening of one's immune system which makes the victim more prone to disases.

Viruses are generally considered to be infectious agents rather than true living organisms. The aetiological agent for AIDS is the HIV(human immunodeficiency virus), a lentivirus.

option A is correct..

The answer is Option D.

option d is right I think

Stress strain curve is a the behaviour of material when it is subjected to load.Here we plot stress along y axis and stress along X axis.

Elasticity of a body is the property of the body by virtue of which the body regains its original size and shape when deformation is removed.

Elastic limit is defined as the maximum stress up to which a material can exhibit the property of elasticity. Beyond this point material cannot exhibit elasticity property.

In graph, Point E is the Elastic limit.

1. They are non-biodegradable. The decomposition takes about years. 2. Animals can eat bags that will affect their health.

Breaking stressis the maximum force that can be applied on a cross sectional area of a material in such a way that the material is unable to withstand any additional amount ofstressbeforebreaking.

stress seems to be scalar same as that of pressure but when force is involved in a specified direction in stress it is a vector;hence it is neither a vector or scalar so.

Stressis your body's way of responding to any kind of demand or threat. When you sense danger—whether it's real or imagined—the body's defenses kick into high gear in a rapid, automatic process known as the “fight-or-flight” reaction or the "stress response." Thestressresponse is the body's way of protecting you.

Pagla chagla hagla ulmad

thank you so much.

S=F/A=(mg/A)/(X/L)x=S/DGx=10^6/3.3*10^3*10x=100/3.3=30m

ok, thanks a lot

Hence, option (1) is correct.

Ans :- header refers to supplemental data placed at the beginning of a block of data being stored or transmitted. In data transmission, the data following the header are sometimes called the payload or body.

ρ = 1 × 103kg/m3h = 200mg = 10 m/s2(ΔV / V) = 0.1%volume elasticity= K = {ΔP / (ΔV / V)}= {hρg / (ΔV / V)}= {(200 × 1 × 103× 10) / (0.1 / 100)}= 2 × 109N/m2

thanks brother

Mobility is defined as the drift velocity per unit electric field. With the application of electric field, electron's motion would get affected or we can say that electrons get drifted.

This drift velocity of electrons per unit Electric field is known as electron mobility, which is a measure of the effect of electric field on the motion of electrons.

Momentumis the quantity of motion of a moving body. In a basic sense, the more momentum a moving object has, the harder it is to stop.

In physics, we define momentum mathematically as the multiplication of mass and velocity as seen in this equation:p=m*v

p= momentum

m= mass

v= velocity

momentum = mass × velocityP = mv

(a) Q should be used as electric wire should have less resistance.(b) R should be used as with high resistance no current will flow through the handle(c) P should be used to have ideal condition for storing charge.

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The convex mirror has a reflective surface that curves outward. These mirrors are “always” form virtual, erect and diminished regardless of the distance between the object and mirror.

(iii) is correct option

In thesymbolof the electriccell, thelonger line representsthe positive terminal

Kelvin is 273 more than celcius if celcius is 25 then Kelvin is 273 more than celcius that's mean 298 kelvin

Thank u ,give me exact solution

Characteristic of every mirror or lens where parallellightrays converge or appear to converge after reflecting off of the mirror or passing through the lens.

Iflightrays approaching mirror are parallel, the point at which the reflected rays converge is the focal point.

Since the temperature is constant, we must use Boyle's Law in this numerical.

Let us identify the information we have :V1 = 5 litresP1 = 0.8 m of HgV2 = V1 + 3 litresV2 = 5 litres + 3 litresV2 = 8 litresTo find : P2Boyle's law gives the relation between the pressure and volume of a neutral and dry gas which is as follows : V1 * P1 = V2 * P2Substituting the values we know,5 * 0.8 = 8 * P2=> 4 = 8 * P2=> P2 = 4 / 8=> P2 = 0.5 m of Hg

what is the meaning of * this sign..?

plz post a complete question

Larger concave and convex surfaces are giving you bigger images.

The objects can be viewed by taking distance, image distance, and size of an object.

It depends on the magnificent matters and in case of reflecting plane mirror, change in size and does not affect the nature and size of an image formed by it.

Ans :- According to this law - The change in momentum of a body per unit time is directly proportional to the unbalanced force acting on the body and the change in momentum takes place in the direction of the unbalanced force on the body.

That is, F is directly proportional to dp/dt

Where, dp = Change in momentum,And, dt = time taken for this change in momentum

MATHEMATICAL FORMULATION OFSECOND LAW OF MOTION

Consider a body of mass m moving with initial velocity u. Let a force F acts on the body for time t so that the velocity of the body after time t is v.

Initial momentum = muFinal momentum = mvNow,Change in momentum = mv - mu= m(v-u)

Time taken to change this momentum = (t-0)= t

Therefore,

Rate of change of momentum = Change in momentum/ Time taken

= m(v-u) / t

According to the definition of Newton's second law of motion,

Force applied is directly proportional to rate of change of momentum

Or, F is directly proportional to m(v-u)/t.................(1)

Since v= u+at or (v-u/t) = a

Therefore, eqn. 1 can be written as

F is directly proportional to maOr, F= kma...........(2)

Where k is constant of proportionality

If F = 1 unitm = 1 unitAnd, a = 1 unit

Then from eqn (2),

1 = k or k= 1

Put this value of k = 1 in eqn 2, we get,

F= ma

Thus, force acting on the body is directly proportional to

1. It's mass2. It's acceleration

When an object is placed at a large distance from a concave mirror, the image is formed at the Focus.

A virtual image will be formed behind the concave mirror if the object is placed between pole and focus of the mirror.

Work done=mgh=density*volume*gh=1000*10^6*2*10^-2*9.8*1000=1.96*10^-11J

velocity will be √3RT/M=√3*8.314*303/density*volume=√3*8.314*303/1*10^5*1.98=0.199m/s

25 for normal vision

25 cm for the normal vision

Copper ZincElasticityp=m/v 5000g/600cm^3 = 8.33gm/cm^3v^2=u^2+ 2gsa= v-u/t u = 0 v = (50×5/18 )m/st=45sProduct of means = Product of extremes400×x= 8000×1400x=8000x=20