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

Which is an SI base unit?

2015 Summer

2

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

Which pair contains one vector and one scalar quantity?

2015 Summer

2

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

When a constant braking force is applied to a vehicle moving at speed $v$, the distance $d$ moved by the vehicle in coming to rest is given by the exp...

2015 Summer

4

MCQ

CH2 - MEASUREMENT TECHNIQUES

A whale produces sound waves of frequency 5 Hz. The waves are detected by a microphone and displayed on an oscilloscope. What is the time-base setting...

2015 Summer

2

MCQ

CH2 - MEASUREMENT TECHNIQUES

The angular deflection of the needle of an ammeter varies with the current in the ammeter as shown in the graph. Which diagram could represent the ap...

2015 Summer

2

MCQ

CH2 - MEASUREMENT TECHNIQUES

The strain energy $W$ of a spring is determined from its spring constant $k$ and extension $x$. The spring obeys Hooke's law and the value of $W$ is c...

2015 Summer

2

MCQ

CH3 - KINEMATICS

A sphere is released and falls. Its initial acceleration reduces until it eventually begins to travel at constant terminal velocity. Which displacemen...

2015 Summer

3

MCQ

CH3 - KINEMATICS

An insect jumps with an initial vertical velocity of 1.0 $\text{m s}^{-1}$, reaching a maximum height of 3.5 $\times 10^{-2} \text{m}$. Assume the dec...

2015 Summer

2

MCQ

CH3 - KINEMATICS

A body having uniform acceleration $a$ increases its velocity from $u$ to $v$ in time $t$. Which expression would not give a correct value for the bo...

2015 Summer

4

MCQ

CH4 - DYNAMICS

What is a reasonable estimate of the average gravitational force acting on a fully grown woman standing on the Earth?

2015 Summer

2