PHYSICS (A)-CHAPTER 3

Amongst the measuring instruments below, which instrument is used to measure the pressure of a gas in an enclosed container?

Antara alat pengukur di bawah, yang manakah digunakan untuk mengukur tekanan gas dalam bekas tertutup?

• Manometer

  Manometer

• Hydrometer

  Hidrometer

• Barometer

  Barometer

A simple barometer is carried from the ground floor to the 50^th floor of the Petronas Twin Tower. What will happen to the height of the mercury column?

Sebuah barometer ringkas dibawa ke tingkat ke-50 Menara Kembar Petronas. Apa akan terjadi kepada ketinggian lajur raksa dalam barometer?

• Decreases

  Berkurang

• Increases

  Bertambah

• Unchanged

  Tidak berubah

Which of the following is not an application of atmospheric pressure?

Yang manakah antara berikut bukan aplikasi tekanan atmosfera?

• Hydraulic Jack

  Jek hidraulik

• Siphon

  Sifon

• Bourdon Gauge

  Tolok Bourdon

“When pressure is applied to an enclosed liquid, the pressure is transmitted equally and in all directions throughout the liquid” The statement above is known as

“Bila tekanan dikenakan pada cecair tertutup, tekanan dipindahkan sama rata dan dalam semua arah dalam cecair” Pernyataan di atas dikenali sebagai

• Archimedes’ Principle

  Prinsip Archimedes

• Pascal’s Principle

  Prinsip Pascal

• Newton’s Third Law of Motion

  Hukum Gerakan Ketiga Newton

Which of the following instrument functions based on Pascal’s Principle?

Antara alat berikut, yang manakah berfungsi berdasarkan Prinsip Pascal?

• Manometer

  Manometer

• Hydrometer

  Hidometer

• Ammeter

  Ammeter

• Hydraulic jack

  Jek hidraulik

The buoyant force experienced by an object immersed in a fluid is not influenced by

Julangan yang dirasai oleh objek yang berada di dalam cecair tidak dipengaruhi oleh

• density of object

  ketumpatan objek

• volume of fluid displaced

  isipadu cecair yang tersesar

• density of fluid

  ketumpatan cecair

When the velocity of air blowing in a certain region increases, the pressure in that region

Apabila halaju udara yang bergerak di sesuatu kawasan bertambah, tekanan di kawasan itu

• increases

  bertambah

• decreases

  berkurangan

• remains constant

  kekal tidak berubah

When a tennis ball hit with a spin, it moves in a curve instead of moving in a straight line. The path taken by the tennis ball can be explained by using

Apabila sebiji bola tenis dipukul dengan putaran, ia bergerak mengikut lintasan melengkung, bukan dalam lintasan lurus. Lintasan yang diambil oleb bola tenis dapat diterangkan dengan menggunakan

• Newton’s Laws of Motion.

  Hukum Gerakan Newton

• Principle of Conservation of Momentum.

  Prinsip Keabadian Momentum

• Bernoulli’s Principle.

  Prinsip Bernoulli

The pressure at a point in a liquid is not affected by

Tekanan pada suatu titik dalam cecair tidak dipengaruhi oleh

• its density

  ketumpatannya

• the acceleration due to gravity

  pecutan graviti

• the surface area of the liquid

  luas permukaan cecair

• the distance from the surface of the liquid to the point concerned

  jarak dari permukaan cecair ke titik berkenaan

The height of the mercury column of a simple mercury barometer will decrease if

Ketinggian lajur raksa sebuah barometer raksi akan menurun jika

• the glass tube is tilted.

  tiub kaca dicondongkan

• the diameter of the glass tube is increased.

  diameter tiub kaca ditambahkan.

• air is introduced into the vacuum region above the mercury.

  udara dimasukkan ke ruang vakum di atas raksa.

• the barometer is taken to the bottom of a swimming pool

  barometer dibawa ke dasar kolam renang.