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Physics

Physics
Sound cannot pass through

Vacuum
Steel
Water
Air

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Physics
Two waves, each of amplitude 1.5 mm and frequency 10 Hz, are travelling in opposite direction with a speed of 20 mm/s. The distance in mm between adjacent nodes is :

1.2
1.5
2
1

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Physics
What is the unit of relative density?

Kg/m2
Kg/m3
It has no unit
Kg/m

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Physics
Newton's first law of motion gives the concept of

Work
Inertia
Momentum
Energy

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Physics
A vacuum cleaner works on the principle of pressure difference. On the moon it will

Work with reduced efficiency
Not work at all
Work as efficiently as on the earth
Work with increased efficiency

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Physics
Which of the following is the fastest communication channel?

Optical fiber
Microwave
All are operating at nearly the same propagation speed
Radio wave

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MORE MCQ ON Physics

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