PHY2 DIFUSSION

YAAKA DIGITAL LEARNING

S.2 PHYSICS ASSIGNMENT

ASSIGNMENT 3

1. When a room is filled with smoke, the smoke tends to concentrate

A. around the walls  B. close to the walls

C. close to the roof  D. midway between the roof and the floor

2.  Capillary rise in a tube dipped in water is due to

A. Surface tension   B. adhesive force being greater than cohesive force

C. high vapour pressure D. Atmospheric pressure acting on the surface of the water

3. Which of the following statements about states of matter is/are true?

(i)  a liquid has a definite volume but no a definite shape.

(ii)  a vapour has no definite volume and no definite shape.

(iii) a solid has a definite volume and shape.

(iv) a gas has a definite volume and shape.

A. (i) and (iii) only B. (i) only C. (i), (ii) and (iii) only D. (iii) only

4.  When viewing Brownian motion in a smoke cell the observer sees:

A. Air molecules moving in a random motion

B. air molecules vibrating regularly

C. air molecules colliding with each other

D. Smoke particles in a random motion.

5. Which of the below is a matter?

A. Heat B. Sound C. Air D. Light

6.  Which of the following statements below is wrong?

A. Matter is made up of atoms. B. Solid, liquid and gas are states of matter.

C. Solids and liquids have definite shape and volume. D. Gas molecules move freely.

7.  The diagrams in figure show two capillary tubes standing in a trough of mercury and two capillary tubes standing in a trough of water. The correct order of arrangement of the tubes in order of increasing height of the liquid column is;

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A. (i), (ii), (iv),(iii)  B. (ii), (i), (iv), (iii)

C. (ii), (iv), (i), (iii)   D. (iii), (iv), (i), (ii)