MCQ
Assertion : Diamond glitters brilliantly.

Reason : Diamond does not absorb sunlight.

  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • C
    If the Assertion is correct but Reason is incorrect.
  • D
    If both the Assertion and Reason are incorrect.

Answer

Correct option: B.
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
b
Diamond glitters brilliantly because of high refractive index and less critical angle.

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

In a given process for an ideal gas, $dW = 0$ and $dQ < 0.$ Then for the gas
Which of the following is independent of the choice of co-ordinate system
An annular disk of mass $M$, inner radius $a$ and outer radius $b$ is placed on a horizontal surface with coefficient of friction $\mu$, as shown in the figure. At some time, an impulse $J_0 \hat{x}$ is applied at a height $\mathrm{h}$ above the center of the disk. If $h=h_m$ then the disk rolls without slipping along the $x$-axis. Which of the following statement(s) is(are) correct?

(image)

($A$) For $\mu \neq 0$ and $a \rightarrow 0, h_m=b / 2$

($B$) For $\mu \neq 0$ and $a \rightarrow b, h_m=b$

($C$) For $h=h_m$, the initial angular velocity does not depend on the inner radius $a$.

($D$) For $\mu=0$ and $h=0$, the wheel always slides without rolling.

The value of Stefan’s constant is
A charge of $10\, e.s.u.$ is placed at a distance of $2\, cm$ from a charge of $40\, e.s.u.$ and $4\, cm$ from another charge of $20\, e.s.u.$ The potential energy of the charge $10\, e.s.u.$ is (in $ergs$)
The back $e.m.f$. induced in a coil, when current changes from $1$ ampere to zero in one milli second, is $4$ volts, the self inductance of the coil is
A lift of mass $1000\,kg$ is moving with an acceleration of $1$ $m/{s^2}$ in upward direction. Tension developed in the string, which is connected to the lift, is  ........... $N$  $(g= 9.8\ m/{s^2})$
A proton of mass $m$ collides elastically with a particle of unknown mass at rest. After the collision, the proton and the unknown particle are seen moving at an angle of $90^o$ with respect to each other. The mass of unknown particle is
A $12.5\, eV$ electron beam is used to bombard gaseous hydrogen at room temperature. It will emit
The energy stored in the electric field produced by a metal sphere is $4.5\, J$. lf the sphere contains $4\,\mu C$ charge, its radius will be.......$mm$ : [Take : $\frac{1}{{4\pi {\varepsilon _0}}} = 9 \times {10^9}\,N - {m^2}\,/{C^2}\, ]$