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Physics

Physics
Sound waves cannot travel through

Gas
Vacuum
Solid
Liquid

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Physics
If the wavelengths corresponding to ultraviolet, visible and infrared radiations are given as lUV, lVIS and lIR respectively, then which of the following gives the correct relationship among these wavelengths?

LUV > lIR > lVIS
LUV > lVIS > lIR
LUV < lVIS < lIR
LUV < lIR < lVIS

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Physics
What is the range of masses involved in the study of Physics?

10-30 kg to 1055 kg
10-19 kg to 1038 kg
10-30 kg to 1030 kg
10-19 kg to 1055 kg

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Physics
An ice block with a piece of lead embeded in it floats in water. If ice melts the water level

Rises
Falls first and then rises
Remains same
Falls

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Physics
In a particular system, the units of length, mass and time are chosen to be 10 cm, 10 g and 0.1 s respectively. The unit of force in this system will be equivalent to

10 N
1 N
0.1 N
100 N

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Physics
Sound waves in air are

transverse
electromagnetic
longitudinal
polarised

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