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Physics

Physics
Which of the following waves cannot be polarised?

Ultrasonic
Radio
Ultra violet
Infrared

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Physics
Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to:

The heating effect of current alone
Hysteresis loss alone
Both the heating effect of current and hysteresis loss
Intense sunlight at noon

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Physics
Solar energy is converted into chemical energy during

Transpiration
Photosynthesis
Osmosis
Diffusion

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Physics
The increasing order of the refractive index of certain materials is (left to right) ________

Kerosene, Ice, Benzene, Rock Salt
Rock Salt, Ice, Benzene, Kerosene
Ice, Kerosene, Benzene, Rock Salt
Rocksalt, Benzene, Kerosene, Ice

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Physics
The energy of a photon, whose momentum is 10 MeV/c, where c is the speed of light, is given by

10 MeV
1 MeV
100 MeV
0.1 MeV

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Physics
Name the process by which bubbles from liquid are formed?

Surface Tension
Surface Energy
Effervescence
Degasification

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