Physics
An electric iron of 750 W is used for S hours per day. Then the energy consumed in one day by the iron is:

0.6 units
60 units
600 units
6 units

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Physics
To resolve an object in an electron microscope,

The wavelength of the electrons must be close to the diameter of the object
The wavelength of the electrons must be greater than the diameter of the object.
None of these
Both A & B

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