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Syllabus

WHAT IS DIMENSIONAL FORMULA OF PERMITTIVITY OF VACUUM

What is the full form of CGS,FPS & MKS?

The velocity v of a particle depends upon time t, according to the equation v = a + bt +c/(d+t)

write the dimensions of a, b, c, d .

what is the fullform of SONAR and Radar?

check the correctness of the relation:

v=root under E/P ,

where v is speed of the sound in a medium of elasticity E and density P.

What is the dimensional formula for capacitance?

A dimensionless quantity --

a)Never has a unit

b)Always has a unit

c)May have a unit

d)does not exist

what is dimensional formula of young modulus

How to measure the least count of the instrument???

1. 75, 75 2. 110, 70 3. 110, 110 4. 110, 40

find the dimensional formula of resistance R

Find angle of projection at which he horizontal range and maximum height of a projectile are equal?

What is the dimensional formula of Spring Constant (K)?

If a physical quantity Z=A

^{3 }, then what will be the relative error in Z ?difference between fundamental unit and derived unit

Check correctness of relation by dimensional analysis lambda =h/mv where letter have heir own usual meaning?

the value of G in c.g.s. system is 6.67*10

^{-8}dyne cm^{2}/g^{2}.what is its value in s.i.Check the correctness of the relation

h = r p g / 2 s cos(theta) , where h = height, r = radius, p = density, s = surface tension, and g = acceleration due to gravity.

universal gas constant dimensional formulae

What is the no of significant figure in (3.20+4.80)*10

^{5}?Two resistors of resistances R

_{1}=100±3 ohm and R_{2}=200±4 ohm are connected(a) In series, (b) in parallel. Find the equivalent resistance of the (a) series combination, (b) parallel combination. Use for (a) the relation R=R

_{1}+R_{2 }and for (b) 1/R=1/R_{1}+1/R_{2}and ΔR_{1}/R_{1}^{2}+ΔR_{2}/R_{2}^{2}?(A) displacement

(B) velocity

(C) acceleration

(D) angle

find the dimensitions of coefficient of viscocity and its SI unit .

The value of universal gravitational constant G in CGS system is 6.67 x 10

^{-8}dyne cm^{2}/g^{2}. Calculate its value in SI system. please answer this questionDEtermine the dimensionl formula for potential difference

A) v^2r/g

B) v^2/ rg

C) v^2g/ r

D) v^2rg

Plz give ans with explanation

using dimensional analysis derive the relation :-

s=ut + 1/2 at

^{2}pls merit experts pls help..fast

The mass of proton is 1.67 X 10

^{-27}kg. how many protons would make 1g.A gas bubble from an explosion under water, oscillates with atime period Tproportional to p

^{a}d^{b}E^{c}, where p,d, and E arepressure, density and total energy respectively. Find the value ofa, b and c.Check the correctness of

S=ut + 1/2 at^{2}the frequency of vibration of string is given by f= p/2l [F/m]

^{1/2}.Here p is is the no of segments in the string and l is the length.What is the dimensional formula of m?what is a fractional error?

what is the dimensional formula of amplitude?

The van der waals equation for a gas is (P + a/v

^{2})(V-b) = RT where P = Pressure, V = Volume, T = Temperature. Find the dimensions and SI units of a,b, and the Gas Constant R.^{}The sun's angular diameter is measured to be 1920''. The distance D of the sun from the earth is 1.496 *10power -11m. What is the diameter of the sun ? will you pzzz explain me the answer .

Plzz give answer of the percentage error also.

S

_{nth}_{}=u + ( a / 2 )(2n-1) Check whether this equation is dimensionally correct or not.a)m^2,ms^-2. b)m,ms^-1. c)m^2,m.

d)m,ms^-2

Please answer fastly

If momentum of an object is increased by 10%,then its kinetic energy will b increased by--?

a)A b)B c) C d)D.

derivation of three laws of motion

classify variables and constants on the basis of dimensions? Give examples of each type?

time period of an oscillating drop of radius r, density p and surface tension S is

t=k the whole root p * r cube divided by S

Check the correctness of the relation. given k is dimensionless.

If length of a pendulum is (0.8 ± 0.01) m and time period is (2.5 ± 0.12) sec, what is the percentage error in its acceleration due to gravity?

write the advantages and disadvantages of dimensional analysis?

if the error in measurement of radius of a sphere is 2% , then the error in the determination of volume of the sphere will be4%6%8%2%answer me with suitable explainationSO I WOULD LIKE EXPERTS TO TELL ME WHICH RULE IS IT TALKING ABOUT AND WHY HAVE WE ACTUALLTY TAKEN 1.8 AND NOT 2. WHICH NUMBER'S SIGNIFICANT FIGURES IS IT TALKING ABOUT.I WANT THE PROPER ANSWER TO MY QUESTION.

The percentage error in the measurement of mass and speed are 2% and 3% respectively. How much will be the maximum error in the estimate of kinetic energy obtained by measuring mass and speed?

what is Weber and Weber/m

^{2}is equal to?A man walks on a straight road from his home to the market 2.5 km away with a speed of 5km/hr .Finding the market closed ,he instantly turns and walks back home with a speed of 7.5 km/hr .What is the magnitude of average velocity and average speed of man over the interval of time :

^{b}s^{c/2}d^{a/4}.it is observed that the time period is directly proportional to d^{1/2}/s^{1/2}.then what is value of bcorrectness of dimensitional formula v=u+at

Write the dimension of A*B in the relation E=B-X

^{2}/AT , where Eis energy, X is distance and T is time?The velocity (v) of transverse waves on a string may depend upon (1) length (l) of string, (2) tension T in the string and (3) mass per unit length (m) of the string. Derive the formula dimensionally.

Energy due to position of a particle is given by U= (Alpha) y

^{1/2}/ y+(beta), where alpha and beta are constants,y is distance.what is the dimension of (alpha*beta) ?the displacement time graph for the two particles A and B are straight lines inclined at angles of 30 and 45 degrees with the time axis.what is the ratio of the velocities VA : VB ?

PLZ ANS AS SOON AS POSSIBLE ...........TOMMOROW IS MY EXAM

The velocity of sound waves 'v' through a medium may be assumed to depend on:

1. the density of the medium 'd' 2. the modulus of elasticity 's'

Deduce by the method of dimension for formula for the velocity of sound.(take dimensional constant k=1)

What is the dimensional formula of E=mc

^{2}?$1.1.0kg\phantom{\rule{0ex}{0ex}}2.1kg\phantom{\rule{0ex}{0ex}}3.\left(1.0\pm 0.1\right)kg\phantom{\rule{0ex}{0ex}}4.\left(1.0\pm 0.2\right)kg$

the velocity 'v' of water waves may depend on their wavelength, density of water and acceleration due to gravity. Find relation between these quantities by the method of dimension

time for 20 swings = 17.4s

time for 50 swings = 43.2s

Calculate the average time per swing in each case. The answers are slightly different. Suggest some possible experimental reasons for this.

check the dimensional accuracy of the relation T=2pie root l/g?

Two resistors of resistances R

_{1}= 100+/-3 ohm and R_{2}= 200+/-4 ohm are connected (a) in series, (b) in parallel. Find the equivalent resistance of the (a) series combination, (b) parallel combination. Use for (a) the realtion R = R_{1}+ R_{2}and for (b) 1/R ' = 1/R_{1}+ 1/R_{2}andΔR '/R '^{2}=ΔR_{1}/R_{1}^{2}+ΔR_{2}/R_{2}^{2}.^{4}Can a quantity have dimensions but still no units?

Find the dimension of a/b in the equation p=a-t

^{2}/bx where p is pressure,x is distance and t is time.1) polar molecule

2) non polar molecule

what is the dimensional formula for heat?

v_{1}andv_{2}respectively along thex&yaxis. The initialseparation between them is 'd' as shown in the figure. Find the least distance between them during

their motion.

(A) $\frac{d.{v}_{1}^{2}}{{v}_{1}^{2}+{v}_{2}^{2}}$ (B) $\frac{{\displaystyle d.{v}_{2}^{2}}}{{\displaystyle {v}_{1}^{2}+{v}_{2}^{2}}}$ (C) $\frac{{\displaystyle d.{v}_{1}}}{{\displaystyle \sqrt{{v}_{1}^{2}+{v}_{2}^{2}}}}$ (D) $\frac{{\displaystyle d.{v}_{2}}}{{\displaystyle \sqrt{{v}_{1}^{2}+{v}_{2}^{2}}}}$

If x=a+bt+ct

^{2 where x is in metres and t is in seconds.What is the unit of c?}if dimensions of length are expressed as g

^{x}c^{y}h^{z}where g,c and h are the universal gravitational costant, speed of light and planck`s constant respectively. what is the value of x,y and z?What is the dimensional formula of light year?

check the accuracy:- F.S=1/2mv^2-1/2mu^2 where F=force & S= distance

Can a quantity have units but still dimensionless? Can a quantity have dimensions but still unitless?

a man of mass 60kg is standing on a spring balance inside a lift .if the lift falls freely downwards, then the reading of springbalance would be

a) 0

b) 60kgf

c) <60kgf

d) >60kgf

the period of oscillation of a simple pendulum is T=2pi√4g. measured value of l is 20.0 cm known to 1mm accuracy and time for 100 oscillations of the pendulum is found to be 90s using a wrist watch of 1s resolution. What is the determination of g.