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Physics

Physics
Sun's heat reaches us by

Radiation
Conduction
Convection
Reflection

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Physics
The best material for the core of a transformer is

Mild steel
Soft iron
Stainless steel
Hard steel

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Physics
When the Sun is near the horizon during the morning or evening, it appears reddish. The phenomenon that is responsible for this observation is

Reflection of light
Dispersion of light
Refraction of light
Scattering of light

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Physics
Ball bearings are used in cycles, scooters etc to

None of these
Increase the friction between the wheel and the axle
Reduce the friction between ground and the whee
Reduce the friction between the wheel and the axle

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Physics
Which of the following is a device designed to protect electrical devices from voltage spikes?

Heat protector
Voltage unloader
Current unloader
Surge protector

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Physics
Rolling friction is caused by ________

Buoyancy
Non-elastic effects
Gravity
Power dissipation

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MORE MCQ ON Physics

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