List of top Questions asked in Punjab PMET- 2004

Acetaldehyde gives orange coloured precipitate on treatment with

A perfectly black body is one where

A particle moves from position $r_1 = 3 \hat i + 2 \hat j - 6 \hat k$ to position $r_2 = 14 \hat i + 13 \hat j + 9 \hat k$ under action of force $F = 4 \hat i + \hat j + 3 \hat k$ N. The work done will be

If $\vec{A} \times \vec{B}|=| \vec{A} \cdot \vec{B} \mid$ then the angle between $\vec{A}$ and $\vec{B}$ will be :

If $\left|\vec{A}+\vec{B}\right|=\left|\vec{A}-\vec{B}\right|$, then the angle between $\vec{A}$ and $\vec{B}$ will be

Two open organ pipes of length $25\, cm$ and $25.5\, cm$ produce $0.1$ beat/sec. The velocity of sound will be :

Which one of the following is different from others?

A man of weight $ 75\,kg $ is standing in an elevator which is moving with an acceleration of $5\,m/s^{2}$ in upward direction the apparent weight of the man will be: $ (g=10\,m/s^{2})$

In achromatic combination of lenses is formed by joining :

In Bohr?s model, the atomic radius of the first orbit is $r_0$ . The radius of the third orbit, is

The effective acceleration of a body, when thrown upwards with acceleration $ a $ will be: