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Physics

Physics
In SONAR which kind of wave is used?

Radio
Audible sound
Infrasonic
Ultrasonic

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Physics
Visible light has a higher frequency than

X rays
All listed here
Ultra violet
Radio waves

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Physics
One bar is equal to

106 Pa
103 Pa
105 Pa
104 Pa

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Physics
Beta rays emitted by a radioactive material are

The electrons orbiting around the nucleus
Electromagnetic radiations
Charged particles emitted by nucleus
Neutral particles

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Physics
Gas thermometers are more sensitive than the liquid thermometers because the gases

Have low specific heat
Are lighter
Have high,specific heat
Have large coefficient of expansion

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

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