# +2 Science Physics Physical World & Measurement Test

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+2 Science

Physics world and measurement

1 / 10

Category: Physics 1st Year

Which the following is a dimensionless quantity

2 / 10

Category: Physics 1st Year

What is the dimensional formula of torque and energy

3 / 10

Category: Physics 1st Year

From the given three fundamental constants, select the combination that gives the dimension of length

(i) Newton’s gravitational constant (G)

(ii) Speed of light in a vacuum (c)

(iii) Planck’s constant (h)

4 / 10

Category: Physics 1st Year

What is the angle between A and B, if $\vec{A}+\vec{B}=\vec{C}$ such that $\vec{C}$ is perpendicular to $\vec{A}$ and $\left | \vec{A} \right |=\left | \vec{C} \right |$

5 / 10

Category: Physics 1st Year

Following are the readings obtained while measuring the diameter of a wire by using the screw gauge0 mm is the main scale reading

52 divisions are the circular scale reading

What is the diameter of the wire if 1 mm on the main scale is equal to the 100 divisions on the circular scale

6 / 10

Category: Physics 1st Year

Calculate the value of the dot product of the two vectors whose magnitudes are 3 units and 4 units and their resultant is 1 unit.

7 / 10

Category: Physics 1st Year

How many numbers of base SI units are there?

8 / 10

Category: Physics 1st Year

What is the percentage error in the measurement of the kinetic energy of a body, if there is a positive error of 50% in the speed of the body?

9 / 10

Category: Physics 1st Year

Find the relative error of y, if y=x2(a) $\frac{\bigtriangleup x}{x}$

10 / 10

Category: Physics 1st Year

Identify the physical parameters that are having the same dimensions from the below-given list:

(i) Magnetic field

(ii) Energy density

(iii) Refractive index

(iv) Young’s modulus