If $q$ is false and $p \wedge q \leftrightarrow r$ is true,then which one of the following statements is a tautology?

  • A
    $(p \vee r) \to (p \wedge r)$
  • B
    $(p \wedge r) \to (p \vee r)$
  • C
    $p \wedge r$
  • D
    $p \vee r$

Explore More

Similar Questions

$A$ photoelectric cell is illuminated by a point source of light $1\;m$ away. When the source is shifted to $2\;m$,then:

Curie temperature is the temperature above which :

The mass of a planet is half that of the earth and the radius of the planet is one-fourth that of earth. If we plan to send an artificial satellite from the planet,the escape velocity will be,(escape velocity on earth $v_e = 11 \ km \ s^{-1}$) (in $km \ s^{-1}$)

Which of the following is true in the case of an adiabatic process,where $\gamma = C_p / C_V$?

$A$ common emitter transistor amplifier has a current gain of $50$. If the load resistance is $4 \ k\Omega$ and input resistance is $500 \ \Omega$,the voltage gain of the amplifier is

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo