Question

What is constant for a object performing uniform circular motion?
A) acceleration B) speed
C) velocity
D) displacement
Acceleration of a car is 4 m/sWhat is the change in the velocity in 0.5 sec?
A) 20m/s
B) 200.0m/s
C) .02m/s
D) 2.0m/s
Constant speed of a train is 108 km/h. What is its speed in unit m/s?
A) 20m/s
B) 200.0m/s
C) 15m/s
D) 30m/s
If you drop a ball and it attains a velocity of 4.9m/s in 0.5 s what would be its acceleration ?
A)9.8 m/s?
B) 98m/s
C) 980 m/s
D) 0.98m/s?
Why is it difficult to walk on ice?
A)due to more inertia B)due to more friction C) due to absence of inertia D) due to absence
Inertia of an object depends on which quantity?
A) weight
B) force
C) momentum
D) mass
What change cannot be brought by the force acting on an object ?
A)volume
B) mass " C) velocity
D) shape
What is the quantity of motion contained in a moving body called?
A) acceleration B) inertia
C) momentum
D) impulse
Who practically for the first time measured the value of G?
A) Galileo
B) Cavendish
C) Newton
D) Archimedes
10 What is the unit of pressure?
A) newton
B) dyne
C)pascal
D) kilogram
11 Which is the SI unit of density?
A) kg
" B) m
C) kg/m2
D) kg/m2
12 What is the molecular formula of sulphur?
B)S6
C) $2
D) S
13 How many elements are available in nature?
A) 116
B) 113
C)114
D) 115
14 Out of the following which is triaomic?
A) water
B) nitrogendioxide C) sodiumhydrooxide D) all of these
15 Which of the following particals have the highest penetrating power?
A)alpha
B) beta
C) gamma
D) X-rays
16 What is the number of protons in tritium?
B)3
C)2
D) 1
Who developed the concept of atom being smallest indivisible particle having independent Existence?
A) Dalton
B) Chadwick
C) Williard
D) Rutherford
38 What is the molecular mass of water:
A)18u
B)17u
C) 16u
D15u
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Answer 1

Answer:

speed

20m/sec

wait for other answers

Answer 2

Answer:

C) velocity

D) 2.0m/s

A) 20m/s

B) 98m

B) force/s

D) shape

D) impuls

B) Cavendish

C) Newtone