Form Three - Comprehensive Quiz 3

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🕰️ Duration: 15 minutes

❓ Number of Questions: 2

⏰ Time Remaining: 15:00

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A uniform beam XY is pivoted at one end X, and a vertically upward force of 4N at Y keeps the beam horizontal. The weight of the beam in Newton’s is?

A. 8 B. 6 C. 4 D. 2 E. 1

A force F Newton’s gives a mass of 2 kg an acceleration of 4m/s2.A force of 3F Newton’s will give a mass of 8kg an acceleration in m/s2of ?

A. 1 B. 3 C. 6 D. 12 E. 24

In a single rope 4-pulley system, the mechanical advantage is less than 4. Because

A. The effort may vary B. The upper pulley does not move. C. Friction act on a pulleys D. The weight of the lower pulley can be neglected. E. The road is raised.

A physics teacher asked the students to explain briefly things which may cause fire in the physics laboratory. The students tried to answer but some explanations were not correct. Identify the explanations which were not correct

A. Electric faults. B. Presence of flammable materials. C. Carelessness in using gas lighter and match boxes. D. The colour of some chemicals supports combustion. E. Presence of corrosive materials

A measuring cylinder is filled with oil. A girl says that the pressure at the bottom of the cylinder depends on?;

1. The height of the oil
2. The area at the bottom
3. The oil lubrication property.
4. The oil density.

Which one of A, B, C, D and E is correct?

A. 1 and 3 B. 2 and 4 C. 1 and 2 D. 1 and 4 E. 3 and 4

A car moving at steady speed has a frictional force on its surface whose size depends on?

A. Its speed and surface area B. Its speed only. C. Its area only. D. Its weight. E. Its wheel speed only.

A cooking oil was mixed with water and poured into a measuring cylinder and allowed to settle for three minutes, which one will be the observed phenomenon?

A. Meniscus of water appeared convex in shape at the surface. B. Cooking oil floats over water. C. Water floats over the oil D. Water and oil completely mixed up E. Cooking oil are soluble in water

The following is a reason why objects in air tend to fall at the same time when they are released from the same height h above the ground level.

A. They have the same weight. B. There is usually no resistance in the air. C. Acceleration due to gravity is the same. D. Gravity does not affect E. None of the above.

A house building contractor fitted window glass panes which someone cannot see through, but the rooms are fully illuminated with light. These types of glass pane materials are said to be:

A. Dim B. Opaque C. Translucent D. Transparent E. Black materials.

Apparent weight is equal to:

A. Up thrust B. Weight of liquid displaced C. Apparent loss in weight D. Weight of body when in liquid E. Weight of body when in water