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Physics

Physics
Which of the following is the unit of perceived loudness of sound ?

Decibel
Sone
Phon
Hertz

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Physics
A car accelerates uniformly from 18 kmph to 72 kmph in 5 s. The acceleration of the car (in m/s2) is:

7
5
3
6

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Physics
According to the quantum theory of light, the energy of light is carried in discrete units are called

Electrons
Protons
Photons
Photoelectrons

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Physics
Hertz is the SI unit of

Frequency
Pressure
Weight
Power

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Physics
A passenger standing in a bus is thrown outward when the bus takes a sudden turn. This happens due to

Inertia of motion
Change in acceleration
Change in momentum
Outward pull on him

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Physics
An object with a mass of 22 kg moving with a velocity of 5 m/s possesses a kinetic energy of :

110 J
2750 J
275 J
110 J

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