Question 1 :
$5.74\ g$ of a substance has density $4.8 gcm^{-3}$.Keeping significant figures in view,calculate its volume?
Question 2 :
When a current of $(2.5 0\pm 0.5)A$ flows through a wire, it develops a potential difference of $(20\pm 1)V$. The resistance of the wire is :
Question 3 :
Subtract $2.5 \times {10}^{4}$ from $3.9 \times {10}^{5}$ and give the answer to correct number of significant figures.
Question 4 :
Fill in the blank:<br/>When the measured quantity is not dimensionless, ___________ is a dimensionless error.
Question 6 :
Which of the following quantifies has the least number of significant digits? 
Question 8 :
Two bodies of masses $20 kg$ and $15 kg$ are dropped from the top of a building. At any instant during the fall, which of the following properties that both the bodies posses is equal in magnitude?
Question 9 :
A rock falls off top of a building and drops to the ground in 3 m 20 sec. what is the height of the building?
Question 10 :
A ball is dropped from a certain height, and at that exact same moment a rock is fired horizontally from the exact same height above ground level.<br>Assuming that air resistance is negligible, which object will strike the ground first?
Question 11 :
The acceleration of a body projected upwards with a certain velocity is equal to :
Question 12 :
A passenger in a moving train tosses a coin. If the coin falls behind him, the train must be moving with
Question 13 :
A car moving on a straight road accelerates from a speed of $4.1 \ {m}/{s}$ to a speed of $6.9\ {m}/ {s}$ in $5 \ s$. Its average acceleration is
Question 14 :
A car starts from rest and accelerates on a straight horizontal track at $5 {m}/{{s}^{2}}$. Find out the distance travel by the car in $8$ seconds?
Question 15 :
A car starting from rest acquires a velocity of $180 m{s}^{-1}$ in $0.05 hr$. Find the acceleration.