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Syllabus

WHAT IS DIMENSIONAL FORMULA OF PERMITTIVITY OF VACUUM

Q. If the temperature of water increases then the apparent weight of a wood block

a. increase

b. decreases

c. Either increases or decreases

d. none of the above

Give reason.

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

what is dimensional formula of young modulus

what is the fullform of SONAR and Radar?

What is the dimensional formula for capacitance?

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) $\frac{{\displaystyle d.{v}_{2}}}{{\displaystyle \sqrt{{v}_{1}^{2}+{v}_{2}^{2}}}}$

1. Wd/x 2. W(d-x)/x 3. W (d-x)/d 4. Wx/d.

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

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

find the dimensional formula of resistance R

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

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

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

"measuring the thickness of a given sheet using screw gauge"

difference between fundamental unit and derived unit

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}?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.p.by dimensional analysis determine an expression for the force F exerted by the jet against the plate.universal gas constant dimensional formulae

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

^{a}L^{b}T^{-c}] . If the % error in the measurement of M, L and T are alpha % , beta % and gama % respectively , then maximum % error in measurement of X should be ( given that alpha , beta and gama are very small ) 1) (alpha*a -beta*b+ gama *c) % 2) ( alpha* a+ beta*b + gama*c ) % 3) ( alpha*a - beta* b- gama*c ) % 4) (alpha*a+beta*b - gama*c ) %DEtermine the dimensionl formula for potential difference

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 .

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.Check the correctness of

S=ut + 1/2 at^{2}What is Personal Error, Instrumental Error and Random Error? Explain with giving an example?

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

what is the dimensional formula of amplitude?

the volume of the sphere is 1.76m cube.what will be the volume of 25such spheres taking into account the significant figures.

what is a fractional error?

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 .

using the principle of homogeneity of dimensions,find which of the following is correct?

1.T square = 4 pi square 'a' cube

2.T square=4 pi square 'a' cube divided by G

3.T square = 4 pi square 'a' cube divided by GM

where T-time period

G-gravitational constant

M-mass

a-radius of orbit.

S

_{nth}_{}=u + ( a / 2 )(2n-1) Check whether this equation is dimensionally correct or not.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 questionderivation of three laws of motion

F= 3t(Fin Newton andtin second) acts on three blocksm_{1},m_{2}andm_{3}kept in contact on a rough ground as shown. Co-efficient of friction between blocks and ground is 0.4. Ifm_{1},m_{2}andm_{3}_{ }are 3 kg, 2 kg and 1 kg respectively, the time after which the blocks started to move is (g = 10 ms^{–2})If momentum of an object is increased by 10%,then its kinetic energy will b increased by--?

what is Weber and Weber/m

^{2}is equal to?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 explainationwrite the advantages and disadvantages of dimensional analysis?

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

difference between basic and derived units?

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 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?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.

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 :

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.

correctness of dimensitional formula v=u+at

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)

What is the dimensional formula of E=mc

^{2}?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

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

Express the acceleration of 10ms

^{-2}into km/hr^{2}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 total time for the round trip is :

(A) $\frac{2\mathcal{l}}{\sqrt{{v}^{2}-{\nu}^{2}}}$ (B) $\frac{{\displaystyle 2v\mathcal{l}}}{{\displaystyle \sqrt{{v}^{2}-{\nu}^{2}}}}$ (C) $\frac{{\displaystyle 2v\mathcal{l}}}{{\displaystyle {v}^{2}-{\nu}^{2}}}$ (D) $\frac{{\displaystyle 2\mathcal{l}}}{{\displaystyle \sqrt{{v}^{2}+{\nu}^{2}}}}$

Can a quantity have dimensions but still no units?

A dimensionless quantity --

a)Never has a unit

b)Always has a unit

c)May have a unit

d)does not exist

what is the dimensional formula for heat?

if the errors involved in the measurements of a side and mass of a cube are 3% and 4% respectively ,what is the maximum permissible error in the density of the material?

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.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?

1)a

2)3a

3) a/3

4)2a

The answer given is a/3. How is that possible?! Please tell me the reasons/

d potential energy of a particle varies wid distance 'x' from a fixed origin as;-U=A root /x square + B , WHERE A and B are dimensional constants then WHAT WILL be dimensional formula for AB?

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.