Class 11 Physics · Chapter 7 · Test 1
Waves and Interference
36 MCQs This test covers wave terms (amplitude, frequency, wavelength, period and v = fλ), mechanical, electromagnetic, quantum and surface waves, and transverse versus longitudinal waves. It also covers the principle of superposition, noise-cancelling headphones, coherent sources and constructive and destructive interference with path-difference numericals.
36 questions · 30 min · 36 marks
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Sample questions
The first 5 of 36. Try each one, then tap to see the answer.
Question 1
A wave is a disturbance that transfers:
- AMatter only
- BEnergy without transferring matter
- CMass from source to receiver
- DCharge only
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Answer: B
A wave carries energy away from the source without the medium itself travelling along.
Question 2
Energy from the Sun reaches the Earth in the form of:
- ASound waves
- BSeismic waves
- CLight (electromagnetic) waves
- DWater waves
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Answer: C
The Sun's energy reaches Earth as electromagnetic waves which can travel through vacuum.
Question 3
Electromagnetic waves unlike mechanical waves can travel through:
- AOnly solids
- BOnly liquids
- COnly gases
- DA vacuum
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Answer: D
Electromagnetic waves do not need a medium so they can pass through vacuum.
Question 4
In a medium energy is transferred due to:
- ARegular repeated disturbances of the particles of the medium
- BPermanent movement of particles from source to receiver
- CChemical change in the medium
- DIncrease in mass of the medium
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Answer: A
Regular repeated disturbances travel through the medium and carry the energy.
Question 5
When a stone is thrown into still water the water particles:
- ATravel outward with the ripple
- BMove up and down about their positions
- CMove in a straight line away from the stone
- DRemain completely at rest
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Answer: B
The particles oscillate up and down about their equilibrium positions while the ripple spreads.
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