OSSD registeration exam Physics

1,The product of the force applied and the ----- can be expressed as power.

• A. velocity

• B. displacement

• C. acceleration

2.The -----is the product of force to velocity.

• A. Power

• B. work

• C efficiency

3.The mechanical advantage of a machine depends on the----- present.

• A. friction

• B. load

• C. effort

4.If the work done in 1 second is ---- the power is 1 watt.

• A.1 joule

• B. 1 newton

• C. 1 erg

5.The veolicty ratio is usually much greater than -----.

• A. one

• B. two

• C. three

6.The atmospheric pressure changes according to ----- and time.

• A. locality

• B. area

• C. volume

7. Manometer is a device used to measure the ----.

• A. pressure

• B. atmospheric pressure

• C. density of liquid

8. When bodies are immersed in a liquid there is loss in weight. This is because of a property of liquid called ----.

• A. buoyancy

• B. density

• C. pressure

9.Cloth ,plastic and wood are poor ---- of heat.

• A. conductor

• B. Insulators

• C. none of these

10.In cold regions where rooms are heated by fire, heating is done by ---- process.

• A. conduction

• B. convention

• C. radiation