1
JEE Main 2021 (Online) 1st September Evening Shift
Numerical
+4
-1
A 50 watt bulb emits monochromatic red light of wavelength of 795 nm. The number of photons emitted per second by the bulb is x $$\times$$ 1020. The value of x is __________. [Given : h = 6.63 $$\times$$ 10$$-$$34 Js and c = 3.0 $$\times$$ 108 ms$$-$$1]
2
JEE Main 2021 (Online) 31st August Evening Shift
Numerical
+4
-1
The value of magnetic quantum number of the outermost electron of Zn+ ion is ______________.
3
JEE Main 2021 (Online) 31st August Morning Shift
Numerical
+4
-1
Ge(Z = 32) in its ground state electronic configuration has x completely filled orbitals with ml = 0. The value of x is ___________.
4
JEE Main 2021 (Online) 27th August Evening Shift
Numerical
+4
-1
The number of photons emitted by a monochromatic (single frequency) infrared range finder of power 1 mW and wavelength of 1000 nm, in 0.1 second is x $$\times$$ 1013. The value of x is _____________. (Nearest integer)

(h = 6.63 $$\times$$ 10$$-$$34 Js, c = 3.00 $$\times$$ 108 ms$$-$$1)
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