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1. CONCISE Physics - Middle School - 7

CHAPTERS

1. Physical Quantities and Measurement

2. Motion

3. Energy

4. Light energy

5. Heat

6. Sound

7. Electricity and Magnetism

EXERCISES

1. Objective Questions

2. Short/Long Answer Questions

3. Numericals

Q1) Write true or false for each statement

(a) The SI. unit of volume is litre.

(b) a measuring beaker of capacity 200 ml can measure only 200 ml volume of a liquid.

(c) cm^2 is a smaller unit of area than m^2.

(d) equal volumes of two different substances have equal masses.

(e) the SI unit of density is g\ cm^{-3}.

(f) 1 g\ cm^{-3} = 1000 kg\ m^{-3}.

(h) the speed 5 m\ s^{-1} is less than 25 km\ h^{-1}.

(i) the SI unit of speed is m\ s^{-1}.

Q2) Fill in the blanks: (a) 1 m^3 = ______ cm^3

(b) The volume of an irregular solid is determined by the method of _____.

(c) Volume of a cube = ________ (d) The area of an irregular lamina is measured by using a ______.

(e) Mass = density \times ______. (f) The S.I. unit of density is _____.

(g) 1 g\ cm^{-3} = ______ kg\ m^{-3}. (h) 36 km\ h^{-1} = _____ m\ s^{-1}.

(i) Distance travelled d = _______ \times time t.

Q3) Match the following:

Q4) Select the correct alternative:

(a) One litre is equal to:

1 cm^{-3}

1 m^3

10^{-3}\ cm^3

10^{-3}\ m^3

(b) A metallic piece displaces water of volume 15 ml. The volume of piece is:

15 cm^3

15 m^3

15\times10^3\ cm^3

(c) A piece of paper of dimensions 1.5m 20 cm has area:

30 m^2

300 cm^2

0.3 m^2

3000 m^3

(d) The correct relation is:

d\ =\ M\times V

M\ =\ d\times Y

V=d\times M

d = M + V

(e) The density of alcohol is 0.8 g\ cm^{-3}. In S.I. unit, it will be:

0.8 kg\ m^{-3}

0.0008 kg\ m^{-3}

800 kg\ m^{-3}

8\times10^3\ kg\ m^{-3}

(f) The density of aluminium is g\ cm^{-3} and brass is 8.4 g\ cm^{-3}. For the same mass of volume of:

both will be same

aluminium will be less than that of brass

aluminium will be more than that of brass

nothing can be said

(g) A block of wood of density 0.8 g\ cm^{-3} has a volume of 60 cm^3. The mass of block will be:

60.8 g

75 g

48 g

0.013 g

(h) The correct relation for speed is

Speed = distance x time

speed = distance/time

speed = time/distance

speed = 1/ distance x time

(i) A boy travels a distance of 150 m in 1 minutes. His speed is:

150 m\ s^{-1}

2.5 m\ s^{-1}

25 m\ s^{-1}

9 m\ s^{-1}

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CONCISE Physics - Middle School - 7

Physical Quantities and Measurement

Motion

Energy

Light energy

Heat

Sound

Electricity and Magnetism

Objective Questions

Short/Long Answer Questions

Numericals

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