1
NEET 2013
MCQ (Single Correct Answer)
+4
-1
The condition under which a microwave oven heats up a food item containing water molecules most efficiently is
2
AIPMT 2012 Mains
MCQ (Single Correct Answer)
+4
-1
The ratio of amplitude of magnetic field to the amplitude of electric field for an electromagnetic wave propagatting in vacuum is equal to
3
AIPMT 2012 Prelims
MCQ (Single Correct Answer)
+4
-1
The electric field associated with an em wave in vacuum is given by
E = $$\widehat i$$ 40 cos (kz $$-$$ 6 $$ \times $$ 108 t) where E, z and t are in volt/m, meter and seconds respectively. The value of wave vector k is
E = $$\widehat i$$ 40 cos (kz $$-$$ 6 $$ \times $$ 108 t) where E, z and t are in volt/m, meter and seconds respectively. The value of wave vector k is
4
AIPMT 2011 Prelims
MCQ (Single Correct Answer)
+4
-1
The decreasing order of wavelength of infrared, microwave, ultraviolet and gamma rays is
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