NEET Exam  >  NEET Tests  >  Test: Dimensions of Physical Quantities (NCERT) - NEET MCQ

Test: Dimensions of Physical Quantities (NCERT) - NEET MCQ


Test Description

5 Questions MCQ Test - Test: Dimensions of Physical Quantities (NCERT)

Test: Dimensions of Physical Quantities (NCERT) for NEET 2024 is part of NEET preparation. The Test: Dimensions of Physical Quantities (NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Dimensions of Physical Quantities (NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Dimensions of Physical Quantities (NCERT) below.
Solutions of Test: Dimensions of Physical Quantities (NCERT) questions in English are available as part of our course for NEET & Test: Dimensions of Physical Quantities (NCERT) solutions in Hindi for NEET course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: Dimensions of Physical Quantities (NCERT) | 5 questions in 5 minutes | Mock test for NEET preparation | Free important questions MCQ to study for NEET Exam | Download free PDF with solutions
Test: Dimensions of Physical Quantities (NCERT) - Question 1

Which of the following physical quantities has a unit but no dimensions?

Detailed Solution for Test: Dimensions of Physical Quantities (NCERT) - Question 1

Among the given physical quantities angle has a unit but no dimensions. Angle = [M°L°T°]
The SI unit of angle is radian.

Test: Dimensions of Physical Quantities (NCERT) - Question 2

Which of the following physical quantities has neither units nor dimensions?

Detailed Solution for Test: Dimensions of Physical Quantities (NCERT) - Question 2

Relative density is the ratio of two like quantities.
Therefore, it has neither unit nor dimensions.

1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Dimensions of Physical Quantities (NCERT) - Question 3

A dimensionless quantity

Detailed Solution for Test: Dimensions of Physical Quantities (NCERT) - Question 3

A dimensionless quantity need not always have a unit, example: angular displacement, θ is dimensionless but has a unit of radians, and quantities like co-efficient of friction, have no dimensions and no units.

Test: Dimensions of Physical Quantities (NCERT) - Question 4

Which of the following pairs of physical quantities have same dimensions?

Detailed Solution for Test: Dimensions of Physical Quantities (NCERT) - Question 4

we know, force = mass × acceleration
energy = Workdone = force × displacement
power = energy/time
torque = force × perpendicular distance between force and axis of rotation. now, by these formula, find dimension of all terms.
Example: dimension of force = [MLT⁻²]
dimension of energy = [ML²T⁻²]
dimension of power = [ML²T⁻³]
dimension of torque = [ML²T⁻²]
Here it is clear that dimension of energy and dimension of torque are equal.
Hence, option (b) is correct.

Test: Dimensions of Physical Quantities (NCERT) - Question 5

If P, Q, R are physical quantities, having different dimensions, which of the following combinations can never be a meaningful quantity?

Detailed Solution for Test: Dimensions of Physical Quantities (NCERT) - Question 5

Physical quantities having different dimensions cannot be added or subtracted.
As P, Q and R are physical quantities having different dimensions, therefore they can neither be added nor be subtracted.
Thus, (a) can never be a meaningful quantity.

Information about Test: Dimensions of Physical Quantities (NCERT) Page
In this test you can find the Exam questions for Test: Dimensions of Physical Quantities (NCERT) solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Dimensions of Physical Quantities (NCERT), EduRev gives you an ample number of Online tests for practice

Top Courses for NEET

Download as PDF

Top Courses for NEET