Theory

CH26 - PARTICLE & NUCLEAR PHYSICS

The spontaneous and random decay of a radioactive substance involves the emission of either $\alpha$-radiation or $\beta$-radiation and/or $\gamma$-ra...

2009 Summer

Theory

CH26 - PARTICLE & NUCLEAR PHYSICS

(a) A sample of a radioactive isotope contains $N$ nuclei at time $t$. At time $(t + \Delta t)$, it contains $(N - \Delta N)$ nuclei of the isotope.Fo...

2009 Summer

MCQ

CH26 - PARTICLE & NUCLEAR PHYSICS

The gold nucleus $^{185}_{79}\text{Au}$ undergoes alpha decay.What are the nucleon (mass) number and proton (atomic) number of the nucleus formed by t...

2009 Winter

MCQ

CH26 - PARTICLE & NUCLEAR PHYSICS

The nuclei of the isotopes of an element all contain the same number of a certain particle. What is this particle?

2009 Winter

MCQ

CH26 - PARTICLE & NUCLEAR PHYSICS

Alpha, beta and gamma radiations1. are absorbed to different extents in solids,2. behave differently in an electric field,3. behave differently in a m...

2009 Winter

MCQ

CH26 - PARTICLE & NUCLEAR PHYSICS

Two $\alpha$-particles with equal energies are fired towards the nucleus of a gold atom. Which diagram best represents their paths?

2009 Winter

Theory

CH26 - PARTICLE & NUCLEAR PHYSICS

An $\alpha$-particle A approaches and passes by a stationary gold nucleus N. The path is illustrated in Fig. 7.1.(a) On Fig. 7.1, mark the angle of de...

2009 Winter

Theory

CH26 - PARTICLE & NUCLEAR PHYSICS

Tungsten-184 \( \left( ^{184}_{74}\text{W} \right) \) and tungsten-185 \( \left( ^{185}_{74}\text{W} \right) \) are two isotopes of tungsten.Tungsten-...

2009 Winter

Theory

CH26 - PARTICLE & NUCLEAR PHYSICS

The controlled reaction between deuterium $\left(\frac{2}{1}H\right)$ and tritium $\left(\frac{3}{1}H\right)$ has involved ongoing research for many y...

2009 Winter

Theory

CH26 - PARTICLE & NUCLEAR PHYSICS

(a) State what is meant by the decay constant of a radioactive isotope...................................................................................

2009 Winter

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

Which pair of quantities contains one vector and one scalar quantity?

2013 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

One property Q of a material is used to describe the behaviour of sound waves in the material. Q is defined as the pressure P of the sound wave divide...

2013 Summer

MCQ

CH3 - KINEMATICS

A cannon fires a cannonball with an initial speed $v$ at an angle $\alpha$ to the horizontal. Which equation is correct for the maximum height $H$ re...

2013 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

A wave has a frequency of 5 GHz. What is the period of the wave?

2013 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

In an experiment to determine the acceleration of free fall $g$, the period of oscillation $T$ and length $l$ of a simple pendulum were measured. The ...

2013 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

The Y-input terminals of a cathode-ray oscilloscope (c.r.o.) are connected to a supply of amplitude 5.0 V and frequency 50 Hz. The time-base is set at...

2013 Summer

MCQ

CH3 - KINEMATICS

A body is released from rest and falls vertically in air of constant density. Which statement about the motion of the falling body is correct?

2013 Summer

MCQ

CH3 - KINEMATICS

A goods train passes through a station at a steady speed of 10 m s$^{-1}$. An express train is at rest at the station. The express train leaves the st...

2013 Summer

MCQ

CH3 - KINEMATICS

A car is stationary at traffic lights. When the traffic lights go green, the driver presses down sharply on the accelerator. The resultant horizontal ...

2013 Summer

MCQ

CH4 - DYNAMICS

Which of the following is a statement of the principle of conservation of momentum?

2013 Summer