Physics Test 19

Total Questions: 24

1 - The instrument which is used to determine atmospheric pressure is

A ) Mercury ✅
B ) Galvano meter
C ) Barometer
D ) Voltmeter

2 - A simple barometer is ____ baro meter.

A ) Mercury ✅
B ) Water
C ) Steel
D ) Aluminium

3 - Height of mercury columb on the sea level is

A ) 7mm
B ) 70cm
C ) 76cm ✅
D ) 76mm

4 - Mercury is denser ____time than water.

A ) 13 times
B ) 13.6 times ✅
C ) 13.7 times
D ) 14 times

5 - Value of atmospheric pressure at height of 30km from sea level is

A ) 1300OPa
B ) 101300Pa
C ) 1000Pa ✅
D ) 10000Pa

7 - Density of air is

A ) 1.3 Kgm-³ ✅
B ) 89 Kgm-³
C ) 920 Kgm-³
D ) 1000 Kgm-³

8 - Density of ice is

A ) 1000 Kgm-³
B ) 920 Kgm-³ ✅
C ) 800 kgm-³
D ) 2500 Kgm-³

9 - Density of water is

A ) 1000Kgm-³ ✅
B ) 920 Kgm-³
C ) 800 Kgm-³
D ) 2500 Kgm–³

10 - Density of Aluminum is

A ) 2500 Kgm-³
B ) 2700 Kgm-³ ✅
C ) 7900 Kgm-³
D ) 11200 Kgm-³

11 - Density of mercury is

A ) 13000 Kgm-³
B ) 13600 Kgm-³ ✅
C ) 7900 Kgm-³
D ) 920 Kgm-³

12 - Pressure in the liquid depend upon the

A ) Density of liquid
B ) Depth of the liquid
C ) Gravitational acceleration
D ) All of these

13 - Application of Pascal's law are

A ) Hydraulic brake
B ) Hydraulic jack
C ) Hydraulic press
D ) All of these

14 - On what principal the ships and submarines float?

A ) Archimedes principle ✅
B ) Hydraulic press
C ) Both a and b
D ) None of these

16 - A force that change the shape, volume and length of body is called

A ) Resistive force
B ) Deforming force ✅
C ) Columb force
D ) Force of gravity

17 - Unit of strain is

A ) Nm
B ) Nm-²
C ) Nm-¹
D ) No unit ✅

18 - The ratio b/w stress and strain is always constant is

A ) Young's modulus
B ) Hook's law ✅
C ) Both a and b
D ) None of these

19 - Young's modulus of aluminum is

A ) 70× 10⁹ Nm-²
B ) 0.02 × 10⁹ Nm
C ) 0.7 × 10⁹ Nm-² ✅
D ) 60 × 10⁹ Nm-²

20 - Young's modulus of bones is

A ) 60 × 10⁹ Nm-²
B ) 16 × 10⁹ Nm-²
C ) 0.02 × 10⁹ Nm-²
D ) 190 × 10⁹ Nm

21 - Young's modulus of iron is

A ) 60 × 10⁹ Nm-²
B ) 190 × 10⁹ Nm-² ✅
C ) 0.02 × 10⁹ Nm-²
D ) 16 × 10⁹ Nm-²

22 - The density of substance can be found with the help of

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

23 - Formula of upthrust force is

A ) & gv
B ) & gAh
C ) Both a and b
D ) None of these

24 - A force that acts on the unit area of a body is called

A ) Pressure
B ) Stress ✅
C ) Density
D ) Both a and b