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Physics Mistakes in Papers > Multiple Choice > Flashcards

Multiple Choice Flashcards

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1
Q

A man freewheels his bike down a hill. He brakes to stop at the bottom. What is the energy change?

A

Gravitational ➡️ Kinetic ➡️ Thermal

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2
Q

What is measured to determine atmospheric pressure in the experiment with a Petri dish of water with test tube coming out of it?

A

Distance between the 2 water levels

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3
Q

Where is the greatest temperature change when light is refracted through a prism?

A

Above red because it is infra-red. This is because it has the longest wavelength.

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4
Q

When does total internal reflection happen?

A

When angle of incidence is greater than the critical angle

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5
Q

What is heated to produce cathode rays?

A

The cathode

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6
Q

Geothermal energy from hot rocks and sunlight on solar panels are…

A

Renewable sources of energy

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7
Q

Nuclear fission is…

A

A non-renewable source of energy

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8
Q

If one liquid takes less time to heat than another liquid it has…

A

A lower thermal capacity

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9
Q

What remains constant when light is refracted?

A

Frequency

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10
Q

What changes when light is refracted?

A

Wavelength, speed and direction

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11
Q

Where do you measure from on the meniscus (water level)?

A

Bottom of the meniscus

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12
Q

Conduction only happens in…

A

Solids

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13
Q

In longitudinal waves the particles oscillate…

A

parallel to the wave direction

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14
Q

In transverse wave the particles oscillate…

A

Perpendicularly to the wave direction

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15
Q

What sort of wires have the most resistance?

A

Long and thin wires have the most resistance

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16
Q

What happens to LDR’s when brightness increases?

A

When brighter, resistance is less

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17
Q

What does the magnetic field in a solenoid look like?

A

Straight lines through solenoid. These lines curl round and attach to make oval shapes above and below solenoid.

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18
Q

Frequency equation

A

F=1/T

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19
Q

What wave type are radio waves?

A

Transverse

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20
Q

These 2 energy sources are always available

A

Geothermal, nuclear fission

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21
Q

Where does a fuse have to be to cut the whole circuit?

A

In series, on the live side of the circuit and after the switch

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22
Q

What sort of waves are emitted by satellite television?

A

Microwaves

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23
Q

What sort of waves are emitted by terrestrial TV?

A

Radio waves

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24
Q

What sort of waves are emitted by a remote control?

A

Infra-red waves

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25
Q

Radiation ordered by most ionising/least penetrative

A

Most : Alpha
Beta
Least: Gamma

26
Q

What sort of circuit is a capacitor used in?

A

Time-delay circuit

27
Q

What sort of circuit is a relay used in?

A

Switching circuit

28
Q

Nuclear energy (from nuclear fission) is first converted into…

A

Thermal energy

29
Q

What happens to the proton number when a beta particle (1 electron) is emitted?

A

The proton number increases by 1

30
Q

What wave type are radio waves?

A

Transverse

31
Q

How can diffraction be stopped?

A

Make the gap larger

32
Q

Why do smoke particles move in the brownian experiment?

A

Collide with air particles

33
Q

How is a manometer used?

A

Measure gap between the 2 liquid levels

34
Q

What effect does changing the temperature of a y-ray source have?

A

No effect

35
Q

What material should the core of a transformer be?

A

Iron

36
Q

How to work out the magnetic field on a wire?

A

Right hand grip rule

37
Q

What is the pressure of a gas supply in a manometer?

A

Distance between water +/- atmospheric pressure

38
Q

What’s a suitable voltage and current for a cathode ray?

A

600v dc

39
Q

Formula for a transformer?

A

Vp/Cp = Vs/Cs

40
Q

Can you hear noise in space?

A

No

41
Q

What effect does gravity have on a ball being thrown upwards?

A

Constant acceleration downwards

42
Q

What effect does changing the temperature of a y-ray source have?

A

Temperature has no effect

43
Q

What material should the core of a transformer be?

A

Iron

44
Q

How do you work out the magnetic field of a wire?

A

Right hand grip rule

45
Q

What is the pressure of a gas supply in a manometer?

A

Distance between water levels +/- atmospheric pressure

46
Q

Alpha has a ….. ionising effect than beta.

Alpha has a ….. penetrating effect than beta.

A

Alpha is more ionising than beta

Alpha is less penetrating than beta

47
Q

In a step-down transformer the biggest coil is the …..

A

Primary coil

48
Q

In a step-up transformer the bigger coil is the….

A

Secondary

49
Q

What can stop a circuit overheating?

A

Circuit-breaker or fuse

50
Q

What does a capacitor do?

A

Stores charge

51
Q

Image through a lens is always….

A

Inverted

52
Q

Where is the best place to put ice packs?

A

At the top of bag of food

53
Q

What is the energy of compressing springs called?

A

Strain

54
Q

How should electricity be transmitted?

A

High voltage, ac current

55
Q

Name 3 transverse waves?

A

Light waves, infra-red waves and ultraviolet waves

56
Q

What type of energy is stored in both matches and batteries?

A

Chemical

57
Q

Increasing deflection of radiation

A

Increase potential difference across plates

58
Q

When does a capacitor charge?

A

When connected to a battery. The capacitor discharges when connected to the circuit with no battery supply

59
Q

Electromagnetic spectrum in order of increasing wavelength

A

Gamma, X-Rays, UV, Visible, Infra-red, microwaves, radiowaves

60
Q

Electromagnetic waves in order of increasing frequency

A

Visible, X-rays, y-rays

61
Q

What happens when a magnet moves through an ac solenoid?

A

Demagnetises

Physics Mistakes in Papers (3 decks)

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