Ask Questions From NCERT:

 Oleic acid is soluble in alcohal and diluting it with alcohal will replace it's concentration consequently it will helps to form a very thin (almost the molecular thickness) get formed and we can measure it's thickness by calculating volume.

-Answered by Himanshi Verma On 25 November 2020:01:28:10 PM

 Accuracy :- Accuracy is how close a measured value is to the actual value.

Precision:- Precision is how closed the measured value are to each other.

-Answered by Himanshi Verma On 25 November 2020:01:24:02 PM

 Plane Angle, Angular displacement have units but no dimensional formula.

-Answered by Himanshi Verma On 25 November 2020:01:22:11 PM

 If the velocity of a body is decreasing with time then it is said to travel with a negative acceleration. {Retardation, declaration}.

-Answered by Himanshi Verma On 25 November 2020:01:19:28 PM

 It continuous upwards unit it reaches a certain position, and then it falls downwards, At that highest point, it's velocity is instantaneously zero.

-Answered by Himanshi Verma On 25 November 2020:01:16:54 PM

 A unit vector is a vector that has a magnitude of 1 unit. A unit vector is also known as direction vector.

-Answered by Himanshi Verma On 25 November 2020:01:14:31 PM

 It states that if two vectors acting on a particle at the same time are represented in magnitude and direction by the two sides  of a triangle in one order, their resultant vector is represented in magnitude and direction by the third side of the triangle taken in opposite order.

-Answered by Himanshi Verma On 25 November 2020:01:11:05 PM

 Instantaneous speed = The speed of a body at a particular instant of time during the motion is called instantaneous speed.

Instantaneous velocity = The velocity of a body at any instant of time is known as instantaneous velocity.

-Answered by Himanshi Verma On 25 November 2020:01:05:35 PM

 The average distance covered by a body per unit time is known as average speed. It is calculated as the ratio of the total distance travelled to the total time taken.

-Answered by Himanshi Verma On 25 November 2020:01:03:26 PM

 If the dimensions of the left hand side of an equation are equal to the dimensions of right hand side of the equation is dimensionally correct. this is known as Homogeneity Principle. 

-Answered by Himanshi Verma On 25 November 2020:01:00:47 PM