BTEC APPLIED SCIENCE - PHYSICS
EXAM QUESTIONS (QUESTIONS AND
ANSWERS 2026 LATEST EDITION) ALL
GRADED A+.
State what is meant by the term analogue signal (1 mark) - CORRECT ANSWER (S) -
A signal that can have any value
State what is meant by the term digital signal (1 mark) - CORRECT ANSWER (S) -A
signal that has 2 values only which are 0 and 1.
Explain 2 advantages of using digital signals instead of analogue signals to transmit
television programs. (2 marks) - CORRECT ANSWER (S) -1. Digital Signals can carry
more info than Analogue signals.
, 2. Less interference so better quality is produced.
Give 2 other differences between visible light waves and sound waves. (2 marks) -
CORRECT ANSWER (S) -1. Visible light is electromagnetic whereas sound is a
vibration
2. Sound waves has a lower frequency than visible light.
Explain the advantages and disadvantages of using radio waves instead of light
waves to send large amounts of information from the satellite to the surface of
the Earth. (4 marks) - CORRECT ANSWER (S) -1. Light waves have a higher
frequency than radio waves so light waves would take less time to transfer
information.
2. Some of the radio waves reach the Earth's surface so they receive a clear signal.
Evaluate the strengths and weaknesses of using:
• An infrared remote control
• A Bluetooth remote control
EXAM QUESTIONS (QUESTIONS AND
ANSWERS 2026 LATEST EDITION) ALL
GRADED A+.
State what is meant by the term analogue signal (1 mark) - CORRECT ANSWER (S) -
A signal that can have any value
State what is meant by the term digital signal (1 mark) - CORRECT ANSWER (S) -A
signal that has 2 values only which are 0 and 1.
Explain 2 advantages of using digital signals instead of analogue signals to transmit
television programs. (2 marks) - CORRECT ANSWER (S) -1. Digital Signals can carry
more info than Analogue signals.
, 2. Less interference so better quality is produced.
Give 2 other differences between visible light waves and sound waves. (2 marks) -
CORRECT ANSWER (S) -1. Visible light is electromagnetic whereas sound is a
vibration
2. Sound waves has a lower frequency than visible light.
Explain the advantages and disadvantages of using radio waves instead of light
waves to send large amounts of information from the satellite to the surface of
the Earth. (4 marks) - CORRECT ANSWER (S) -1. Light waves have a higher
frequency than radio waves so light waves would take less time to transfer
information.
2. Some of the radio waves reach the Earth's surface so they receive a clear signal.
Evaluate the strengths and weaknesses of using:
• An infrared remote control
• A Bluetooth remote control
