Question

All pages
0 2-25)
NAME
BPKIHS Model Entrance Exam SeL K
A unitless physical quantity
a) may have non zero dimensions
b) must have non zero dimensions
c) never has non zero dimensions
d) never exists
Three vectors A, B and C are such that AB = 0 and Ā.C = 0. Then vector A is parallel to
a) B
b) Č
C) À × B
d) B × Č
A river is flowing from West to East at speed of 5m/min. A man on the South bank of the
river capable of swimming at 10m/min in still water wants to cross the river in shortest
possible time. In what direction should he swim?
a) Due North
b) At an angle 30° West of North
c) At an angle 30° East of North
d) At 60° West of North
The path of one projectile as seen by an observer on another projectile is
a) straight line b) parabolic
c) helical
d) hyperbolic
5. Even if the force on the rocket remains same, its acceleration
a) increases
b) decreases
c) remains same>
d) first increases and then decreases
6. In conservative force fields, at equilibrium, potential energy
a) must be maximum
b) must be minimum
Bxc266000
B CSO
Усо gxce
$3$
​

Answer 1

Explanation:

_________________123446780