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- Question 1 of 31
##### 1. Question

If force(F),length(L) and time(T) be considered fundamental units, then the units of mass will be

CorrectIncorrect##### Hint

Think about formula which relates force, mass, length and time. Recollect F=ma and acceleration is rate of change of speed.

- Question 2 of 31
##### 2. Question

The ratio of the dimensions of planck’s constant and that of the moment of inertia is the dimensions of

CorrectIncorrect##### Hint

Write dimensions of Plank’s constant / Moment of Inertia

- Question 3 of 31
##### 3. Question

Young’s modulus of the material of a wire is 18 x 10¹¹ dyne cm⁻².its value in SI is

CorrectIncorrect##### Hint

1 dyne = 10⁻⁵ Newton

- Question 4 of 31
##### 4. Question

If the dimensions of a physical quantity are given by Mᵃ Lᵇ Tᶜ, then the physical quantity will be:

CorrectIncorrect##### Hint

For all the options given below, find out the dimensions

- Question 5 of 31
##### 5. Question

Van der waals,equation of state is(p+a/v²)(V-b)=nRT. The dimensions of a and b are

CorrectIncorrect##### Hint

For subtraction v-b to work, constant b should have the same unit as that of v(volume)

- Question 6 of 31
##### 6. Question

If L and C denote inductance and capacitance,then the dimensions of L-C are

CorrectIncorrect##### Hint

Dimensions of Capacitance is M⁻¹L⁻²T⁴A²

What could be the dimensions of Inductance? - Question 7 of 31
##### 7. Question

Which of the following physical quantities has neither dimensions nor unit

CorrectIncorrect##### Hint

Which one is constant among the options?

- Question 8 of 31
##### 8. Question

Which of the following pairs of physical quantities does not have same dimensional formulae?

CorrectIncorrect##### Hint

Relax yourself. Take a deep breath.

- Question 9 of 31
##### 9. Question

If h is planck’s constant and λ is wavelength, h/λ has dimensions of

CorrectIncorrect##### Hint

Dimension of Planck’s constant = ML²T⁻¹

- Question 10 of 31
##### 10. Question

In the equation y=a sin(ωt+kx),the dimensionals formula of ? is

CorrectIncorrect##### Hint

Angle is dimension less quantity.

- Question 11 of 31
##### 11. Question

Which of the following quantities has units but not dimensions

CorrectIncorrect##### Hint

Projectile Motion: More than the speed, this is important while playing angry birds game.

- Question 12 of 31
##### 12. Question

The quantity having the same units in all systems of unit is

CorrectIncorrect##### Hint

This question can be answered within 1 second

- Question 13 of 31
##### 13. Question

Pressure gradient has the same dimensions as that of

CorrectIncorrect##### Hint

Gradient means rate of change

- Question 14 of 31
##### 14. Question

Which of the following measurement is most precise?

CorrectIncorrect##### Hint

Precision is the smallest unit which can be measured

- Question 15 of 31
##### 15. Question

The pair of quantities having same dimensions is

CorrectIncorrect##### Hint

Both can be expressed as newton-meter

- Question 16 of 31
##### 16. Question

The dimensions of universal gas constant are

CorrectIncorrect##### Hint

Use PV = nRT, where P is the pressure, V is the volume, n is the no of moles, R is gas constant and T is temperature.

- Question 17 of 31
##### 17. Question

The number of significant figures in 0.06900

CorrectIncorrect##### Hint

The zero before decimal point should also be counted as significant figure

- Question 18 of 31
##### 18. Question

Dimensions formula for surface tension is

CorrectIncorrect##### Hint

Formula for surface tension = force/length

- Question 19 of 31
##### 19. Question

Dimensions of electrical resistance are

CorrectIncorrect##### Hint

Volt = Work / Charge= (Force x Length) / (Amp x Time)

- Question 20 of 31
##### 20. Question

The magnetic moment has dimensions of

CorrectIncorrect##### Hint

Unit of magnetic moment is Ampere – metre²

- Question 21 of 31
##### 21. Question

Pascal-second has the dimensions of

CorrectIncorrect##### Hint

The poiseuille is equivalent to the pascal second

- Question 22 of 31
##### 22. Question

In an experiment four quantities a, b, c and d are measured with percentage error 1%, 2%, 3% and 4% respectively. Quantity P is calculated as follows P =a³b²/cd, % error in P is

CorrectIncorrect##### Hint

Error % doubles when the parameter is squared.

- Question 23 of 31
##### 23. Question

If momentum (P), area (A), and time (T) are taken to be fundamental quantities, the energy has the dimensional formula

CorrectIncorrect##### Hint

Substitute dimension of momentum and Length in the dimensional formula of energy

- Question 24 of 31
##### 24. Question

Which two of the following five physical parameters have the same dimensions?

(A)Energy density

(B)Refractive index

(C)Dielectric constant

(D)Young’s modulus

(E)Magnetic fieldCorrectIncorrect##### Hint

D (Young’s modulus) appears thrice in the answer, so find the other quantity which has same dimension.

- Question 25 of 31
##### 25. Question

If L is the inductance,C capacitance and R resistance the ratios L/R and R-C have the same dimensions as those of

CorrectIncorrect##### Hint

It is enough to find one of L/R or R-C to find the answer.

- Question 26 of 31
##### 26. Question

If the error in the measurement of radius of a sphere is 2%, then the error in the determination of volume of the sphere will be

CorrectIncorrect##### Hint

Volume = 4/3 π r³

- Question 27 of 31
##### 27. Question

The refractive index of a material is given by the equation n=A+B/λ², where A and B are constants. The dimensional formula for B is

CorrectIncorrect##### Hint

The dimension for B and λ² should be same

- Question 28 of 31
##### 28. Question

A physical quantity is given by X=[MᵃLᵇT⁻ᶜ]. The percentage error in measurements of M, L and T are A, B and C. Then, the maximum % error in the quantity

CorrectIncorrect##### Hint

Power of dimension should be multiplied to get the error percentage

- Question 29 of 31
##### 29. Question

The numerical value of a given quantity is

CorrectIncorrect##### Hint

Any quantity is measured against some standard unit

- Question 30 of 31
##### 30. Question

If energy (E),velocity(v) and time (T) are chosen as the fundamental quantities,the dimensional formula of surface tension will be

CorrectIncorrect##### Hint

Write the formula of surface tension and express it in terms of Energy, Velocity, and time

- Question 31 of 31
##### 31. Question

The time period of body T is represented by T=P D S where P is pressure, D is density and S is surface tension, then values of a,b and c are

CorrectIncorrect##### Hint

Write down in terms of dimensions and solve it.

M⁰L⁰T¹ = (ML⁻¹T⁻²)ᵃ (ML⁻³)ᵇ (MT⁻²)ᶜ

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Good sir

Thanks for your feedback.

Here the hints given for the questions are helping..but there won’t be hint in our original NEET exam..right??

There wont be hints. NEET exam is not online exam it is paper and pen exam. Here hints are given so that it will guide you thinking and makes you practice similar types of questions which will appear in next.

please set timer also