Exercise 3

Question 26 :

Minimum number of unequal vectors which can give zero resultant are


A). two
B). three
C). four
D). more than four
Answer : Option B

Question 27 :

Intensity of sound has


A). an object existence
B). a subject existence
C). no existence
D). both subjective and objective existence
Answer : Option A

Question 28 :

Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming from


A). east
B). west
C). northeast
D). southeast
Answer : Option A

Question 29 :

An aeroplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically at a point A on the ground a bomb is released from it. The bomb strikes the ground at point B. The distance AB is


A). 1200 m
B). 0.33 km
C). 3.33 km
D). 33 km
Answer : Option C