Units and Measurements Test

Result

Units and Measurements Test - 5

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

The physical quantity which is not a unit of energy is

A
volt-coulomb

B
MeV–s

C
henry (ampere)²

D
farad–(volt)²

Solution
Question 2
4 / -1

The unit of Wien's constant b is

A
Wm^-2K^-4

B
m^-1K^-1

C
Wm²

D
mk
Question 3
4 / -1

The unit of Stefan's constant is

A
Wm^-2 K^-1

B
Wm K^-4

C
Wm^-2 K^-4

D
Nm^-2 K^-4

Solution
Question 4
4 / -1

Ampere–hour is the unit of

A
quantity of charge

B
potential

C
energy

D
current
Question 5
4 / -1

The SI unit of gravitational potential is

A
J

B
J Kg^-1

C
J kg

D
J Kg²

Solution
Question 6
4 / -1

Which of the following set have different dimensions?

A
Pressure, Young’s modulus , Stress

B
EMF, Potential difference, Electric potential

C
Heat, Work done, Energy

D
Dipole moment, Electric flux, Electric field

Solution
Question 7
4 / -1

A
0.04

B
0.03

C
0.02

D
0.01

Solution
Question 8
4 / -1

In a screw gauge, the zero of mainscale coincides with fifth division of circular scale in figure (i). The circular division of screw gauge are 50. It moves 0.5 mm on main scale in one rotation. The diameter of the ball in figure (ii) is

A
2.25 mm

B
2.20 mm

C
1.20 mm

D
1.25 mm

Solution
Question 9
4 / -1

A student performs an experiment to determine the Young's modulus of a wire, exactly 2 m long, by Searle's method. In a particular reading, the student measures the extension in the length of the wire to be 0.8 mm with an uncertainty of ± 0.05 mm at a load of exactly 1.0 kg. The student also measures the diameter of the wire to be 0.4 mm with an uncertainty of ± 0.01 mm. Take g = 9.8 m/s2 (exact). The Young's modulus obtained from the reading is

A
(2.0 ± 0.3) × 10¹¹ N/m²

B
(2.0 ± 0.2) × 10¹¹ N/m²

C
(2.0 ± 0.1) × 10¹¹ N/m²

D
(2.0 ± 0.05) × 10¹¹ N/m²

Solution
Question 10
4 / -1

The dimensional formula of modulus of rigidity ( η ) is

A
[ML^-2 T^-2 ]

B
[ML^-3 T^-2 ]

C
[ML² T^-2 ]

D
[ML^-1 T^-2 ]

Solution