QUIZ CHAPTER 5

QUIZ CHAPTER 5

5th Grade

10 Qs

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QUIZ CHAPTER 5

QUIZ CHAPTER 5

Assessment

Quiz

Physics

5th Grade

Practice Problem

Hard

Created by

NOORHASREZA Moe

Used 3+ times

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10 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is meant by thermionic emission?

A process involving the acceleration of electrons from the cathode to the anode.

A process used to produce beams of high velocity electrons

A process involving the emission of electrons from a hot metal surface.

A process where light is produced when electrons strike the fluorescent screen.

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following will NOT affect the rate of thermionic emission from a metal?

Type of metal

Surface area of metal

Nature of metal surface

Colour of metal surface

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following diagrams shows the correct movement of a cathode ray between two charged metal plates?

Media Image
Media Image
Media Image
Media Image

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

An electron from a cathode being accelerated towards an anode. The potential difference across the two metal plates is 750 V. Calculate the speed of the electron that strikes the anode plate.

(Mass of electron = 9.1 x 10-31 kg ; charge of electron = 1.6 x 10-19 C)

5.92 x 105 ms-1

1.15 x 107 ms-1

1.62 x 107 ms-1

2.64 x 108 ms-1

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following statements is NOT true about cathode rays?

Cathode rays are positively charged.

Cathode rays are deflected by magnetic fields.

Cathode rays consist of high-velocity electrons.

Cathode rays possess momentum and kinetc energy.

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

Diagram above shows two sets of identical bulbs and diodes connected in two circuits, P and Q, separately.

What will happen to the bulb when both of the switches are turned off at the same time?

P = on , Q = on

P = off , Q = off

P = on , Q = off

P = off , Q = on

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is the symbol of pnp transistor?

Media Image
Media Image
Media Image
Media Image

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