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 unit is not an SI base unit?

2023 Summer

3

MCQ

CH2 - MEASUREMENT TECHNIQUES

What is the best estimate of the number of atoms in a piece of metal of volume 50 cm$^3$?

2023 Summer

3

MCQ

CH2 - MEASUREMENT TECHNIQUES

A copper pipe has a true diameter of 42.03 mm.A builder measures the diameter of the pipe five times using digital calipers. The measurements are show...

2023 Summer

3

MCQ

CH3 - KINEMATICS

Two forces, each of 10 N, act at a point P, as shown. The angle between the directions of the forces is 120°. What is the magnitude of the result...

2023 Summer

2

MCQ

CH3 - KINEMATICS

One object moves directly from P to R. In a shorter time, a second object moves from P to Q to R. Which statement about the two objects is correct...

2023 Summer

3

MCQ

CH3 - KINEMATICS

A ball is kicked so that it has an initial velocity of 12 m s⁻¹ at an angle of 50° to horizontal ground. Assume that air resistance is neg...

2023 Summer

2

MCQ

CH4 - DYNAMICS

A camera drone of mass 1.20 kg hovers at a fixed point above the ground. The drone has four propellers. In a time of 1.00 s, each propeller pushes ...

2023 Summer

2

MCQ

CH4 - DYNAMICS

A box rests on the Earth, as shown. Newton’s third law describes how forces of the same type act in pairs. One of the forces of a pair is the w...

2023 Summer

3

MCQ

CH5 - FORCES, DENSITY & PRESSURE

A small ball is held at the surface of liquid oil in a container. The ball is released from rest and falls through the oil. The ball has velocity $v$....

2023 Summer

3

MCQ

CH4 - DYNAMICS

An object of mass $m$, moving at speed $u$ along a frictionless horizontal surface, collides head-on with a stationary object of mass $4m$. After t...

2023 Summer

2