Basics of Physics Worksheet-11

Basics of Physics Worksheet-11

1. A device that uses liquid solution to produce electric energy is called _______.

(a) Dry cell        (b) Wet cell       (c) Liquid cell   (d) Water cell

2. What is the electric current?

(a) It is the flow of atoms.          (b) It is the flow of molecules.

(c) It is the flow of positrons.    (d) It is the flow of electrons.

3. Which of the following medium will not allow vibration to turn into sound waves?

(a) Vacuum       (b) Air                 (c) Water           (d) Nitrogen

4. Cooling a liquid below its _______ will turn it into solid.

(a) flash point                                 (b) melting point

(c) boiling point                             (d) freezing point

5. Which type of lenses are used to correct the vision problem?

(a) Convex Lens

(b) Concave Lens

(c) Both Convex and Concave Lenses

(d) None

6. As shown in the above picture, Red, Green and Blue beams of light are falling on a blue paper. What color of light will be reflected?

(a) All                  (b) Red               (c) Green           (d) Blue

7. What is the force between South and North poles of two magnets?

(a) Pull               (b) Push             (c) Gravity         (d) Electric

8. What kind of force exists between the Earth and the Moon?

(a) Direct                     (b) Gravity         (c) Spring          (d) Tidal

9. What is the effect of the friction force on any moving object?

(a) It has no effect on the object.

(b) It increases its acceleration.

(c) It increases its velocity.

(d) It reduces its velocity.

10. What kind of energy transformation do cooking ovens do?

(a) Chemical energy to Thermal energy

(b) Electrical energy to Light energy

(c) Electrical energy to Cooking energy

(d) Electrical energy to Thermal energy

Answer Key:

(1)–(b); (2)–(d); (3)–(a); (4)–(d); (5)–(c); (6)–(d); (7)–(a); (8)–(b); (9)–(d); (10)–(d)