Random GCSE Revision Questions 1

When light goes from air to glass it…

• refracts towards the normal
• refracts away from the normal
• doesn't refract at all
• undergoes total internal reflection

Echoes are sounds

• reflecting
• refracting
• diffracting
• diverging
• converging

refraction is the

• bending of a wave
• bouncing of a wave
• spreading of a wave
• change of frequency of a wave

What is the conversion in a microphone

• Sound to thermal

• Sound to electric

• Nuclear to thermal

• Light to sound

• Electric to sound

What is the conversion in a solar panel

• Light to electric
• Sound to electric
• Thermal to electric
• Gravitational to electric
• Electric to sound

A torch is 40% efficient and uses 50J of energy. How much is useful

• 20J
• 30J
• 40J
• 15J
• 35J

which ionising radiation has the highest speed?

• Gamma ray
• Alpha ray
• Beta Ray
• Manta Ray

what is alpha emission?

• mass -4 atomic number -2

• mass -1 atomic number -0

• mass -0 atomic number -1

• mass -2 atomic number -4

Which colour of visible light has the shortest wavelength?

• Violet
• Yellow
• Indigo
• Red
• Orange

What is infrared radiation used for?

• Heating and monitoring temperature
• Fluorescent lamps
• Sterilising