1
AIPMT 2005
+4
-1
If a vector $$2\widehat i + 3\widehat j + 8\widehat k$$ is perpendicular to the vector $$4\widehat j - 4\widehat i + \alpha \widehat k,$$ then the value of $$\alpha$$ is
A
1/2
B
$$-$$ 1/2
C
1
D
$$-$$ 1.
2
AIPMT 2004
+4
-1
If $$\left| {\overrightarrow A \times \overrightarrow B } \right| = \sqrt 3 \overrightarrow A .\overrightarrow B$$ then the value of $$\left| {\overrightarrow A + \overrightarrow B } \right|$$ is
A
(A2 + b2 + AB)1/2
B
$${\left( {{A^2} + {B^2} + {{AB} \over {\sqrt 3 }}} \right)^{1/2}}$$
C
A + B
D
(A2 + B2 + $${\sqrt 3 }$$AB)1/2.
3
AIPMT 2003
+4
-1
The vector sum of two forces is perpendicular to their vector differences. In that case, the forces
A
are equal to each other
B
are equal to each other in magnitude
C
are not equal to each other in magnitude
D
cannot be predicted.
4
AIPMT 2002
+4
-1
A particle A is dropped from a height and another particle B is projected in horizontal direction with speed of 5/sec from the same height then correct statement is
A
particle A will reach at ground first with respect to particle B
B
particle B will reach at ground first with respect to particle A
C
both particles will reach at ground simultaneously
D
both particles will reach at ground with same speed.
EXAM MAP
Medical
NEETAIIMS