A-Level Physics

Question 1

According to Newton's Second Law as taught in Singapore A-Level Physics, what is the relationship between force, mass, and acceleration?

Accepted Answer

F = ma

Answer

F = ma²

Answer

F = m/a

Answer

F = m + a

Question 2

What is the principle of conservation of momentum?

Accepted Answer

The total momentum of a closed system remains constant if no external forces act on it

Answer

Momentum is always increasing

Answer

Momentum is only conserved in elastic collisions

Answer

Momentum equals mass times velocity squared

Question 3

What is the relationship between electric field strength (E) and potential difference (V) for a uniform field?

Accepted Answer

E = V/d

Answer

E = V × d

Answer

E = V²/d

Answer

E = d/V

Question 4

In the photoelectric effect studied in Singapore A-Level Physics, what determines whether electrons are emitted?

Accepted Answer

The frequency of the light must exceed the threshold frequency

Answer

The intensity of the light

Answer

The temperature of the metal surface

Answer

The duration of light exposure

Question 5

What is the de Broglie wavelength of a particle?

Accepted Answer

λ = h/p, where h is Planck's constant and p is momentum

Answer

λ = h/E

Answer

λ = h × p

Answer

λ = p/h

Question 6

What is simple harmonic motion (SHM) as defined in the Singapore A-Level syllabus?

Accepted Answer

Motion where the acceleration is proportional to displacement and directed towards a fixed point

Answer

Motion with constant velocity

Answer

Motion in a straight line with constant acceleration

Answer

Motion in a circle at constant speed