Theory

CH25 - QUANTUM PHYSICS

A polished sheet of magnesium in a vacuum emits electrons when it is illuminated by ultraviolet radiation.(a) State the name of this phenomenon..........

2024 Winter

5

Theory

CH25 - QUANTUM PHYSICS

Electrons in a vacuum are accelerated from rest through a potential difference (p.d.) $V$ to form a beam. The electrons each have mass $m$ and charge ...

2024 Winter

6

Theory

CH25 - QUANTUM PHYSICS

A polished sheet of magnesium in a vacuum emits electrons when it is illuminated by ultraviolet radiation.(a) State the name of this phenomenon..........

2024 Winter

4

Theory

CH25 - QUANTUM PHYSICS

(a) State what is meant by a photon......................................................................................................................

2024 Summer

7

Theory

CH25 - QUANTUM PHYSICS

Fig. 8.1 shows part of the emission spectrum of visible radiation emitted by hydrogen gas in a star in a distant galaxy.The galaxy is moving away from...

2024 Summer

6

Theory

CH25 - QUANTUM PHYSICS

(a) State what is meant by a photon......................................................................................................................

2024 Summer

6

MCQ

CH25 - QUANTUM PHYSICS

Which particle is not a fundamental particle?

2024 Summer

6

MCQ

CH25 - QUANTUM PHYSICS

What is the charge of an anti-top quark?

2024 Summer

3

MCQ

CH25 - QUANTUM PHYSICS

A proton has mass $m_p$ and charge $+e$.What are the mass and charge of an antiproton?[Table_1]

2023 Summer

4

MCQ

CH25 - QUANTUM PHYSICS

A $\pi^+$ meson has a charge of $+e$, where $e$ is the elementary charge. It consists of an up quark and one other quark.What could be the other quark...

2023 Summer

6

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

When a force $F$ moves its point of application through a displacement $s$ in the direction of the force, the work $W$ done by the force is given by $...

2012 Summer

3

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

What is a possible unit for the product $VI$, where $V$ is the potential difference across a resistor and $I$ is the current through the same resistor...

2012 Summer

2

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

What is a reasonable estimate of the average kinetic energy of an athlete during a 100 m race that takes 10 s?

2012 Summer

3

MCQ

CH2 - MEASUREMENT TECHNIQUES

A light-meter measures the intensity $I$ of the light falling on it. Theory suggests that $I$ varies inversely as the square of the distance $d$. W...

2012 Summer

3

MCQ

CH2 - MEASUREMENT TECHNIQUES

In an experiment, a radio-controlled car takes $2.50 \pm 0.05$ s to travel $40.0 \pm 0.1$ m. What is the car’s average speed and the uncertaint...

2012 Summer

2

MCQ

CH3 - KINEMATICS

In an experiment to determine the acceleration of free fall using a falling body, what would lead to a value that is too large?

2012 Summer

3

MCQ

CH3 - KINEMATICS

Which feature of a graph allows acceleration to be determined?

2012 Summer

3

MCQ

CH3 - KINEMATICS

The diagram shows a laboratory experiment in which a feather falls from rest in a long evacuated vertical tube of length $L$. The feather takes tim...

2012 Summer

3

MCQ

CH3 - KINEMATICS

In the absence of air resistance, a stone is thrown from P and follows a parabolic path in which the highest point reached is T. The stone reaches poi...

2012 Summer

3

MCQ

CH5 - FORCES, DENSITY & PRESSURE

Each option gives a correct word equation involving force. Which option gives the definition of force?

2012 Summer

3