Home
Class 12
MATHS
Which of the following expressions is no...

Which of the following expressions is not meaningful?

A

`vecu.(vecv xx vecw)`

B

`(vecu.vecv).vecw`

C

`(vecu.vecv)vecw`

D

`vecu.(vecv xx vecw)`

Text Solution

Verified by Experts

The correct Answer is:
B
Doubtnut Promotions Banner Mobile Dark
|

Similar Questions

Explore conceptually related problems

Which of the following expression is ture?

Which of the following expressions are meaningful? vec u*(vec v xxvec w) b.(vec u*vec v)*vec w c.(vec u*vec v)*vec w d.vec u xx(vec v.vec w)

Knowledge Check

  • Which of the following expression is true :-

    A
    `H_(f)^(@)(CO,g)=(1)/(2)Delta H_(f)^(@)(CO_(2),g)`
    B
    `Delta H_(f)^(@)(CO,g)=Delta H_(f)^(@)("C, graphite") +(1)/(2) Delta H_(f)^(@)(O_(2),g)`
    C
    `Delta H_(f)^(@)(CO,g)=Delta H_(f)^(@)(CO_(2),g)-(1)/(2) Delta H_(f)^(@)(O_(),g)`
    D
    `Delta H_(f)^(@)(CO,g)=Delta H_("comb")^(@)("C, graphite")-Delta H_("comb")^(@)(CO, g)`

  • Which of the following expression is not true ?

    A
    `[H^+]=[OH^-]=sqrtK_w` for a neutral solution at all temperatures.
    B
    `[H^+] gt sqrtK_w and [OH^-] lt sqrtKw` for an acidic solution
    C
    `[H^+] lt sqrtK_w and [OH^-] gt sqrtKw` for an alkaline solution
    D
    `[H^+]=[OH^-]=10^(-7)` M for a neutral solution at all temperature.

  • Which of the following expressions are meaningful?

    A
    `vec(u).(vec(v)xxvec(w))`
    B
    `(vec(u).vec(v)).vec(w)`
    C
    `(vec(u).vec(v))vec(w)`
    D
    `vec(u)xx(vec(v).vec(w))`

    • Similar Questions

    Explore conceptually related problems

    Which of the following expression is correct?

    Which of the following expression is wrong?

    Which of the following expressions have no meaning ?

    Which of the following expression is correct ?

    Which of the following expression is correct ?

    Home
    Profile