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Physics

Physics
The speed of sound in air depends on

Wavelength
Temperature
None of these
Frequency

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Physics
Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit

X-rays
visible light
radio waves
ultraviolet light

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Physics
The propagation of sound waves in a gas involves

Isobaric compression and rarefaction
Isothermal compression and rarefaction
Isochoric compression and rarefaction
Adiabatic compression and rarefaction

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Physics
One should not connect a number of electrical appliances to the same power socket because

this can damage the domestic wiring due to overloading
this can damage the appliances due to overloading
the appliance will not get full voltage
this can damage the electrical meter

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Physics
A bomb explodes on the moon. You will hear its sound on earth after ________

You cannot hear the sound of explosion
2 hours 20 minutes
3.7 hours
20 minutes

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Physics
The time period of a seconds pendulum is

0.5 second
1.5 second
1 second
2 seconds

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