Kuiz Fizik Tingkatan 5 Bab 6 Set 1

SELAMAT DATANG Kuiz Fizik Tingkatan 5 Bab 6 Set 1

KUIZ INI MENGANDUNGI 10 SOALAN

In the equation E=mc2, what does the 'c' represent?

The rate of radioactive decay.

The mass of a carbon-12 atom.

The charge of an electron.

The speed of light in a vacuum.

None

What is the primary function of control rods, made of materials like boron or cadmium, inside a nuclear reactor?

To transfer heat from the reactor core to the steam generator

To act as the fuel source for the fission process

To slow down fast-moving neutrons to increase the probability of fission.

To absorb excess neutrons to regulate the rate of the chain reaction.

None

A radioactive substance has a half-life of 15 minutes. If you start with a sample of this substance, what fraction of the original radioactive nuclei will remain undecayed after one hour?

1/16

1/4

1/2

1/8

None

What is the fundamental process that defines radioactive decay?

Two light nuclei combine under high pressure to form a heavier nucleus.

A stable nucleus absorbs external energy and becomes unstable.

A heavy nucleus splits into two or more lighter nuclei when struck by a neutron.

An unstable nucleus transforms into a more stable one by emitting radiation.

None

During beta decay, a neutron in an unstable nucleus transforms. What is the effect on the nucleon number (A) and the proton number (Z) of the nucleus?

Both the nucleon number (A) and the proton number (Z) remain unchanged.

The nucleon number (A) decreases by four, and the proton number (Z) decreases by two.

The nucleon number (A) decreases by one, while the proton number (Z) remains the same.

The nucleon number (A) remains the same, while the proton number (Z) increases by one.

None

According to Albert Einstein's equation E=mc2 , the 'm' represents the mass defect. What is the mass defect in a nuclear reaction?

The difference in mass between the reactants and the products

The total mass of the initial nucleus before the reaction begins

The average mass of the nuclei involved in the reaction

The mass of the energy that is released during the reaction

None

What happens to the atomic nucleus during gamma decay?

It splits into two smaller nuclei.

It emits two protons and two neutrons.

A neutron transforms into a proton and an electron.

It transitions from a higher energy state to a lower energy state without changing its composition.

None

Which of the following describes a nuclear chain reaction?

A self-sustaining process where neutrons released in one fission event trigger further fission events.

A chemical reaction where the products catalyze the next stage of the reaction.

The fusion of multiple hydrogen nuclei in a sequential manner within a star.

A series of alpha and beta decays that occur until a stable nucleus is formed.

None

In the context of a nuclear reactor, what is the primary function of control rods made of boron or cadmium?

To absorb excess neutrons and regulate the rate of the chain reaction.

To transfer heat from the reactor core to the steam generator.

To slow down fast-moving neutrons to increase the probability of fission.

To act as the nuclear fuel that undergoes fission.

None

10.

During beta decay, a neutron within the nucleus is transformed. What are the products of this transformation?

Two protons and an electron.

A proton and a neutron.

An alpha particle.

A proton and an electron.

None

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