Physics Test 17

Total Questions: 25

2 - Which of the substance is the lightest one?

A ) Copper
B ) Mercury ✅
C ) Aluminium
D ) Lead

3 - SI unit of pressure is pascal, which is equal to

A ) 1Nm-² ✅
B ) 10Nm-²
C ) 100Nm-²
D ) 50Nm-²

5 - According to Archimedes up thrust is equal to

A ) Weight of displaced liquid ✅
B ) Volume of displaced liquid
C ) Mass of displaced liquid
D ) None of these

6 - The density of a substance can be found with the help of

A ) Pascal's law
B ) Hooke's law
C ) Archimedia's principal ✅
D ) None of these

7 - According to Hook's law

A ) Stress/strain=contant ✅
B ) Strain/stress= contant
C ) Strain/stress
D ) Stress/strain

8 - At sea level, the atmospheric pressure is about

A ) 101300Pa ✅
B ) 110300Pa
C ) 103100Pa
D ) 100130Pa

9 - The ratio between stress and tensite strain is

A ) Elastic Modulus
B ) Bulk Modulus
C ) Young's Modulus ✅
D ) Shear Modulus

10 - Brownian motion is

A ) Linear motion
B ) Circular motion
C ) Vibratory motion
D ) Random motion ✅

11 - In which state molecules do not leave their position?

A ) Liquid
B ) Solid ✅
C ) Gas
D ) Plasma

12 - Works on Pascal's law

A ) Vernier caliper
B ) Screw gauge
C ) Wedge
D ) Hydraulic press ✅

14 - Mercury is denser than water

A ) 10 times
B ) 12.5 times
C ) 13 times
D ) 13.6 times ✅

15 - Density=____

A ) Mass/ volume ✅
B ) Weight/volume
C ) Weight/Mass
D ) Mass/Time

16 - The fourth state of matter is called

A ) Solid
B ) Liquid
C ) Gas
D ) Plasma ✅

17 - In SI system unit of density is

A ) Kgm
B ) Kgm-¹
C ) Kgm-²
D ) Kgm-³ ✅

18 - SI unit of pressure is pascal which is equal to

A ) 1Nm-² ✅
B ) 10²Nm-²
C ) 10³Nm-²
D ) 10⁴Nm-²

19 - The density of 500gram stone having volume 200cm-¹ will be

A ) 1.5 gcm-³
B ) 2.5 gcm-³ ✅
C ) 3.5 gcm-³
D ) 4.5 gcm-³

20 - In SI units, the unit of pressure is

A ) N
B ) Nm
C ) J
D ) Nm-² ✅

21 - Hydralic press works on

A ) Newton's law
B ) Pascal's law ✅
C ) Hook's law
D ) Archimedes principle

22 - Which of the substance is the lightest one?

A ) Copper
B ) Mercury
C ) Aluminium ✅
D ) Lead

23 - Stress/strain= constant is ____

A ) Pascal's law
B ) Newton's law
C ) Hook's law ✅
D ) Archimedes law

24 - One mega watt is equal to

A ) 10³W
B ) 10⁴W
C ) 10⁶W ✅
D ) 10⁸W

25 - The up thrust force of liquid is equal to

A ) PgV ✅
B ) Pgh
C ) Pgl
D ) Pga