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Physics

Physics
The boiling point of water depends upon the

Density
Mass
Atmospheric pressure
Volume

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Physics
A person lifts luggage of 20 kg from the ground and puts it on his head 2m above the ground. Calculate the work done by him. (g = 10 )

20 J
200J
40J
400J

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Physics
When a ring of metal is heated what happens to its hole ?

It expands or contracts according to its coefficient of expansion
It expands or contracts according to its diameter
Contracts
Expands

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Physics
The complete form of 'IC' in electronics is

Inbuilt circuit
Independent circuit
Integrated circuit
Internal circuit

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Physics
The frequency of ultrasound wave is typically

Below 20 kHz
Above 20 kHz
Above 20,000 kHz
Below 02 kHz

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Physics
Water is not suitable as a calorimetric substance because it :

Has high specific heat
Low latent heat of vapourization
Has high boiling point
Is a good conductor

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