Question

The fraction of volume occupied by the nucleus with respect to the total volume of an atom
(A) 10-15
(D) 109
IB) 10
(C) 10
The MRI (magentic resonance imaging) body scanners used in hospitals operate with 400
The wavelength corresponding to this radio frequency is :
(A) 0.75 m
(D) 2 cm
(B) 0.75 cm
(C) 1.5 m
Electromagnetic radiations of wavelength 242 nm is just sufficient to ionise Sodium ato
energy of Sodium in kJ mole'is.
(A) 494.65
(D) 600
(C) 247
(B) 400
Light of wavelength I falls on metal having work function hc/1, Photoelectric effect will
(A2121
(B)1 221
CHISI
(D) 1
8.
A photon of energy hn is absorbed by a free electron of a metal having work function w
(A) The electron is sure to come out
(B) The electron is sure to come out with a kinetic energy (hn - w)
(C) Either the electron does not come out or it comes with a kinetic energy (hn-w)
(D) It may come out with a kinetic energy less than (hn - w)
() 26 Fe34 26F256, 26F257 26F238 (a) Isotopes, (ii),Hº, He3
(b) Isotone 1
für 3, Ge? 3345
(c) Isodiaphers v​

Answer 1

Answer:

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