Download App

1. units,dimensions and measurement — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics1. units,dimensions and measurement1 Mark
MCQ
Even if a physical quantity depends upon three quantities, out of which two are dimensionally same, then the formula cannot be derived by the method of dimensions. This statement
  • A
    May be true
  • B
    May be false
  • ✓
    Must be true
  • D
    Must be false
✓

Answer

Correct option: C.
Must be true
c
(c)

This statement is completely correct. If a quantity depends upon two other quantities which are dimensionally same then formula's validity can be checked but it can't be derived by the method of dimensions.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 1. units,dimensions and measurement→1. units,dimensions and measurement — all question types→Physics STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

$Assertion$ : For a system of particles under central force field, the total angular momentum is conserved.
$Reason$ : The torque acting on such a system is zero.
→
Out of the following which quantity does not depend on path
→
Inside a uniform spherical shell:
  1. The gravitational potential is zero.
  2. The gravitational field is zero.
  3. The gravitational potential is same everywhere.
  4. The gravitational field is same everywhere.
→
The negative of the work done by the conservative internal forces on a system equals the change in:
→
A triode is operated in the linear region of its characteristics. If the plate voltage is slightly increased, the dynamic plate resistance will:
  1. Increase.
  2. Decrease.
  3. Remain almost the same.
  4. Become zero.
→
A ball of mass $160\, g$ is thrown up at an angle of $60^o$ to the horizontal at a speed of $10\, m\,s^{-1}$ . The angular momentum of the ball at the highest point of the trajectcry with respect to the point from which the ball is thrown is nearly ........ $kg\, m^2/s$  $(g\, = 10\, m\,s^{-2})$
→
A block of mass $15 \,kg $ is resting on a rough inclined plane as shown in figure. The  block is tied up by a horizontal string which has tension of $50\,N$. The minimum  coefficient of friction between the surfaces of contact is $(g = 10\,m/s^2)$
→
Two particle of mass $m$ each are tied at the ends of a light string of length $2 \mathrm{a}$. The whole system is kept on a frictionless horizontal surface with the string held tight so that each mass is at a distance $'a'$ from the center $\mathrm{P}$ (as shown in the figure). Now, the mid-point of the string is pulled vertically upwards with a small but constant force $F$. As a result, the particles move towards each other on the surface. The magnitude of acceleration, when the separation between them becomes $2 \mathrm{x}$ is
→
The physical quantities not having same dimensions are
→
The spherical shape of rain-drop is due to
→