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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
CorrectIncorrectHint
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
CorrectIncorrectHint
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
CorrectIncorrectHint
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:
CorrectIncorrectHint
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)(Vb)=nRT. The dimensions of a and b are
CorrectIncorrectHint
For subtraction vb 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 LC are
CorrectIncorrectHint
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
CorrectIncorrectHint
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?
CorrectIncorrectHint
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
CorrectIncorrectHint
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
CorrectIncorrectHint
Angle is dimension less quantity.

Question 11 of 31
11. Question
Which of the following quantities has units but not dimensions
CorrectIncorrectHint
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
CorrectIncorrectHint
This question can be answered within 1 second

Question 13 of 31
13. Question
Pressure gradient has the same dimensions as that of
CorrectIncorrectHint
Gradient means rate of change

Question 14 of 31
14. Question
Which of the following measurement is most precise?
CorrectIncorrectHint
Precision is the smallest unit which can be measured

Question 15 of 31
15. Question
The pair of quantities having same dimensions is
CorrectIncorrectHint
Both can be expressed as newtonmeter

Question 16 of 31
16. Question
The dimensions of universal gas constant are
CorrectIncorrectHint
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
CorrectIncorrectHint
The zero before decimal point should also be counted as significant figure

Question 18 of 31
18. Question
Dimensions formula for surface tension is
CorrectIncorrectHint
Formula for surface tension = force/length

Question 19 of 31
19. Question
Dimensions of electrical resistance are
CorrectIncorrectHint
Volt = Work / Charge= (Force x Length) / (Amp x Time)

Question 20 of 31
20. Question
The magnetic moment has dimensions of
CorrectIncorrectHint
Unit of magnetic moment is Ampere – metre²

Question 21 of 31
21. Question
Pascalsecond has the dimensions of
CorrectIncorrectHint
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
CorrectIncorrectHint
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
CorrectIncorrectHint
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 fieldCorrectIncorrectHint
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 RC have the same dimensions as those of
CorrectIncorrectHint
It is enough to find one of L/R or RC 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
CorrectIncorrectHint
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
CorrectIncorrectHint
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
CorrectIncorrectHint
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
CorrectIncorrectHint
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
CorrectIncorrectHint
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
CorrectIncorrectHint
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