Free Printable Chapter 1: (C1& C2) Physical Quantities and Measurement

1.

Define vector quantity.

a)

Quantity which has magnitude.

b)

Quantity which has both magnitude and direction

c)

Quantities that cannot be defined in term of other physical quantities

d)

Quantities derived from combination of base quantities through multiplication or division or both

2.

Choose TWO(2) examples of base quantity

a)

Mass and density

b)

Length and area

c)

Length and mass

d)

Mass and velocity

3.

Define physical quantity

a)

Quantities that cannot be defined in term of other physical quantities

b)

Quantities derived from combination of base quantities through multiplication or division or both.

c)

Quantity that cannot be measured

d)

Quantity that can be measured

4.

Determine the reading of the following measurement tools.

a)

2.72 cm

b)

2.78 cm

c)

2.82 cm

d)

2.88 cm

5.

Convert 75𝜇𝑔 𝑡𝑜 𝑔

a)

75000000 g

b)

0.0075 g

c)

0.000075 g

d)

75000 g

6.

The dimensional formula for kinetic energy is:

a)

M²L²T²

b)

M L²T^-2

c)

M²L T^-2

d)

M L²T

7.

Resolve the vector to its horizontal component

a)

$x=14\ \sin\ 55$

b)

$x=14\ \cos\ 55$

c)

$x=55\ \cos\ 14$

d)

$x=55\ \sin\ 14$

8.

A boy throws a stone at a velocity of 20 m s^-1, 50° above horizontal.

a)

b)

c)

d)

9.

$if\ x=LT^{-1}\ and\ y=MLT^{-1}\$ thus xy dimentions is :

a)

$ML^2T^{-2}$

b)

$MLT^{-2}$

c)

$MLT^{-1}$

d)

$MLT$

10.

Basic quantity is defined as a

a)

quantity which can be derived from any physical quantities.

b)

quantity which cannot be derived from any vector quantities.

c)

quantity which cannot be derived from any physical quantities.

d)

quantity which can be derived from any vector quantities.

11.

Calculate the horizontal and vertical components of a 50 N force which is acting 40° to the horizontal.

a)

Horizontal: 38.30 N; Vertical: 32.14 N

b)

Horizontal: 40 N; Vertical: 35 N

c)

Horizontal: 30.30 N; Vertical: 30.14 N

d)

Horizontal: 28.30 N; Vertical: 32.14 N

12.

What are the x and y components of the plane's velocity?

a)

$v_x=38.6\ m\ s^{-1}\ ;\ v_y=10.4\ m\ s^{-1}$

b)

$v_x=50.5\ m\ s^{-1}\ ;\ v_y=15.4\ m\ s^{-1}$

c)

$v_x=20.5\ m\ s^{-1}\ ;\ v_y=10.4\ m\ s^{-1}$

d)

$v_x=10.4\ m\ s^{-1}\ ;\ v_y=38.6\ m\ s^{-1}$

13.

What are superman's x and y component?

a)

$x=86.6\ m\ ;\ y=-50\ m$

b)

$x=86.6\ cm\ ;\ y=-50\ cm$

c)

$x=-86.6\ m\ ;\ y=-50\ m$

d)

$x=86.6\ m\ ;\ y=50\ m$

14.

What is the dimensional formula of surface tension T= $\frac{F}{l}$

a)

ML⁰T^-2

b)

ML²T^-2

c)

M⁰L²T^-2

d)

ML³T

15.

What are the dimensions of Angle?

a)

No dimensions

b)

L

c)

L^-1

d)

θ

16.

Which of the following equation is consistent ?

a)

u=v + at

b)

S= ut + 1/3 at^2

c)

Kinetic Energy = 7/9 mv^2

d)

1/2 mv^2 = mgh

17.

Select the applications of Dimensional Analysis

(It may have more than 1 answer)

a)

Check the correctness of mathematical equation

b)

To derive equation for more than 3 physical quantities

c)

To derive the relationship between physical quantities

d)

Conversion of units from one system to another

Chapter 1: (C1& C2) Physical Quantities and Measurement

Total questions: 17

Worksheet time: 17mins

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