MCQ
Atomic radius of $fcc$ is
  • A
    $\frac{ a }{2}$
  • $\frac{a}{2 \sqrt{2}}$
  • C
    $\frac{\sqrt{3}}{4} a$
  • D
    $\frac{\sqrt{3}}{2} a$

Answer

Correct option: B.
$\frac{a}{2 \sqrt{2}}$
$\frac{a}{2 \sqrt{2}}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

An electron and a proton with equal momentum enter perpendicularly into a uniform magnetic field, then(a) The path of proton shall be more curved than that of electron(b) The path of proton shall be less curved than that of electron(c) Both are equally curved(d) Path of both will be straight line
 
 
 
 
The magnitude of magnifying power of an astronomical telescope is $5,$ the focal power of its eyepiece is $10$ diopters. The focal power of its objective $($in diopters$)$ is$:$
Which of the following statements is incorrect about hysteresis(a) This effect is common to all ferromagnetic substances(b) The hysteresis loop area is proportional to the thermal energy developed per unit volume of the material(c) The hysteresis loop area is independent of the thermal energy developed per unit volume of the material(d) The shape of the hysteresis loop is characteristic of the material
 
 
 
 
The current passing through a choke coil of 5 henry is decreasing at the rate of 2 ampere/sec. The e.m.f. developing across the coil is(a) 10 V(b) – 10 V(c) 2.5 V  (d) – 2.5 V
       
Newton's law of cooling is a special case of:
An electron changes its position from orbit $n = 4$ to the orbit $n = 2$  of an atom. The wavelength of the emitted radiation’s is $(R =$ Rydberg’s constant$)$
In series combination of capacitors the effective capacitance:
A superconductor exhibits perfect:
For which colour, the angle of deviation is maximum when light enters into glass from air?
Out of gravitational, electromagnetic, Vander Waals, electrostatic and nuclear forces; which two are able to provide an attractive force between two neutrons (a) Electrostatic and gravitational(b) Electrostatic and nuclear(c) Gravitational and nuclear(d) Some other forces like Vander Waals