1 kilo-calorie= 4184 joules
0.001 kilo-calorie= 1 calorie
therefore 5.25 calorie=21.966 joules
Answer:
The correct option is (a).
Explanation:
Given that,
The energy of photon, E = 2.52 eV
We need to find the wavelength of the photon in nm. The formula for the energy of a photon is given by :

The nearest option is a) i.e. 492.34127 nm.
D=m/v then v=m/d=17.5/2=8.75ml
I think the answer is C. Remaining constant
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