Units and Measurements Test

Result

Units and Measurements Test - 47

Score
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Rank
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Weekly Quiz Competition

Question 1
4 / -1

From the dimensional consideration, which of the following equation is correct ?

A

B

C

D

Solution
Question 2
4 / -1

A
M⁰L¹T^–1 and T^–1

B
M⁰L¹T⁰ and T^–1

C
M⁰L¹T^–1 and LT^–2

D
M⁰L¹T^–1 and T

Solution
Question 3
4 / -1

A
MT^–2

B
M²LT^–3

C
ML³T^–1

D
LT^–3

Solution
Question 4
4 / -1

A
[ML⁵T^–2]

B
[M^–1L⁵T^–2]

C
[ML^–1T^–2]

D
[ML^–5T^–2]

Solution
Question 5
4 / -1

A
[LT^–1]

B
[L^–1 T]

C
[L^–2T²]

D
[L²T^–2]

Solution
Question 6
4 / -1

The dimensions of e² / 4πε₀hc, where e, ε₀, h and c are electronic charge, electric permittivity, Planck\'s constant and velocity of light in vacuum respectively

A
[M⁰L⁰T⁰]

B
[M¹L⁰T⁰]

C
[M⁰L¹T⁰]

D
[M⁰L⁰T¹]

Solution
Question 7
4 / -1

If the radius of the sphere is (5.3 ± 0.1)cm. Then percentage error in its volume will be

A

B

C

D

Solution
Question 8
4 / -1

The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate. If the maximum error in the measurement of force and length are respectively 4% and 2%, the maximum error in the measurement of pressure is

A
1%

B
2%

C
6%

D
8%

Solution
Question 9
4 / -1

Assuming the mass of Earth as 6.64 × 10²⁴ kg and the average mass of the atoms that make up Earth as 40u (atomic mass unit), the number of atoms in the Earth are approximately

A
10³⁰

B
10⁴⁰

C
10⁵⁰

D
10⁶⁰

Solution
Question 10
4 / -1

A
0.1%

B
1%

C
0.2%

D
0.8%

Solution