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Syllabus

WHAT IS DIMENSIONAL FORMULA OF PERMITTIVITY OF VACUUM

what is Weber and Weber/m

^{2}is equal to?What is the full form of CGS,FPS & MKS?

relative error in two measurements are [Assume only systamatic errors are involved]

(A) Absolute error same for both, relative error greater for MA and lesser for MB.

(B) Absolute error same for both, relative error greater for MB and lesser for MA.

(C) Relative error same for both, absolute error greater for MA and lesser for MB.

(D) Relative error same for both, absolute error greater for MB and lesser for MA. do give proper steps and reason for this as i couldn't understand

what is the fullform of SONAR and Radar?

A point P is taken to be origin of time and position . Two points Q and R are situated on a straight line passing through P . The positions of Q and R are 8m and 12m respectively while the instant at which the body reach these points are 3s and 5s . WHAT IS THE SPEED OF THE BODY?????What is the dimensional formula for capacitance?

Q71. The coefficient of viscosity ($\mathrm{\eta}$) of a liquid by the method of flow through a capillary tube is given by the formula $\mathrm{\eta}$ = $\frac{\mathrm{\pi}\mathrm{R}\mathrm{P}}{8\mathrm{l}\mathrm{Q}}$

where R = radius of the capillary tube,

l = length of the tube and

P = pressure difference between its ends, and

Q = volume of liquid flowing per second.

Which quantity must be measured most accurately?

(A) R (B) l (C) P (D) Q

what is dimensional formula of young modulus

1.A composite wire of diameter 1cm consisting of copper and steel wire of length 2.2m and 2 m

respectively.total extension of wire when stretched by a force is 1.2mm.calculate the force .(

Y of steel is 2*10

^{11 pa}Y of copper is 1.1*10

^{11 pa}How to measure the least count of the instrument???

What is Personal Error, Instrumental Error and Random Error? Explain with giving an example?

PLEASE TELL ME............

find the dimensional formula of resistance R

One student doubts the expression for kinetic energy as MV

^{3}or Kinetic^{2}. How can you help him with the help of dimensionalFind 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)?

what is the smallest and biggest unit of mass,time,length. plz answer fast.

.

difference between fundamental unit and derived unit

h=Fv^2 /L x F

. F is the force, v is the velocity

and L is the angular momentum. Find the

dimensions of h .

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.^{1/2}V(V + b) where n, P, V & T are the number of moles, pressure, volume & temperature respectively & R is the universal gas constant. Find the dimensions of constant a in the above equation.universal gas constant dimensional formulae

solid angle d(ohm) as the ratio of the intercepted area dA of the spherical surface , described about the apex O as the centre , to the square of its radius r.

please explain with the help of diagrams.

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

DEtermine the dimensionl formula for potential difference

using dimensional analysis derive the relation :-

s=ut + 1/2 at

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

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.A. 8 units, (180 - 37 degree)

B. 10 units, 37 degree

C. 10 Units, 53 degree

D. 8 Units, 53 degree

Check the correctness of

S=ut + 1/2 at^{2}what is a fractional error?

There is an equation in physics, here it is!!! : U = VIt.

Can anybody please tell me what does U refer to????? Please give my answer!!!!. I will surely give thumbs up!!!!.

what is the dimensional formula of amplitude?

A dimensionless quantity --

a)Never has a unit

b)Always has a unit

c)May have a unit

d)does not exist

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 .

S

_{nth}_{}=u + ( a / 2 )(2n-1) Check whether this equation is dimensionally correct or not.Human Heart is an in built clok, comment.

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

Pls rfr to the question

derivation of three laws of motion

Name the principle behind the uplift of aeroplane

(a) Conservation of momentum

(b) Bernoulli,s

(c) Newton’s 3rd law

(d) reversibility

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 .

Spring constant of a spring is calculated using formulae K =4pi

^{2}M/T^{2,}where T is time period of vertical oscillation when mass M is hung with the help of spring to rigid support. If time of oscillation for 10 oscillations is measurd to be 5.0s and mass M =0.20kg, find possible error in spring constant K.Check correctness of relation by dimensional analysis lambda =h/mv where letter have heir own usual meaning?

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.

write the advantages and disadvantages of dimensional analysis?

radius of a circle is 0.6%. Find the

percentage error in the calculation of the area

of the circle.

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 explainationThe centripital force(F) acting on a body may depend upon mass of the body (m), radius of the circle (r) and frequency of revolution (v). Derive the formula dimensionally

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.

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?

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.^{}^{3}, f has the dimension of?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 :

correctness of dimensitional formula v=u+at

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

^{5}?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.

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)

a Ethylamine(C2H5-NH2)

b NH3

c Ethyl alcohol

d Diethy ether(C2H5-O-C2H5)

What is the dimensional formula of E=mc

^{2}?^{-5}erg s^{-1}cm^{-2}K^{-4}. How to write its value in SI unitsthe 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

61. The percentage error in measurement of a physical quantity m, given by m = pi tan theta, is minimum when

i) theta = 45

^{o}ii) theta = 90

^{o}iii) theta = 60

^{o}iv) theta = 30

^{o}check the dimensional accuracy of the relation T=2pie root l/g?

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.

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}.The unit of 1/l √T/m is the same as that of (where T = tension force, m = mass per unit length l) a Frequency b. Time period c. Wave lenght d. Wave no.

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.what is the dimensional formula for heat?

If x=a+bt+ct

^{2 where x is in metres and t is in seconds.What is the unit of c?}What is the dimensional formula of light year?

Length of a sheet is17.3+_ 0.3 cm and breadth is 3.12+_ 0.08 . cm Calculate the percentage error in the area.

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?

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.

block is measured using Vernier callipers. The

percentage errors in the measurements are

2%, 1% and 3% respectively. Estimate the

percentage error in its volume.