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311. MCQPractice set · Question 98

[M⁰L⁰T⁻¹] dimension কোন quantity-এর?

a.
frequency
b.
wavelength
c.
acceleration
d.
momentum

Correct answer: a

Frequency-এর dimension [T⁻¹]।

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312. MCQPractice set · Question 99

Pressure ও energy density-এর dimension সম্পর্ক কী?

a.
একই
b.
ভিন্ন
c.
pressure dimensionless
d.
energy density-এর dimension [L]

Correct answer: a

Energy density = energy/volume = [ML²T⁻²]/[L³] = [ML⁻¹T⁻²], যা pressure-এর সমান।

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313. MCQPractice set · Question 100

Mass density ও number density-এর dimension কি একই?

a.
হ্যাঁ
b.
না, number density-তে mass dimension নেই
c.
শুধু SI-তে
d.
দুটিই dimensionless

Correct answer: b

Mass density [ML⁻³], কিন্তু number density [L⁻³]; তাই dimension আলাদা।

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314. MCQPractice set · Question 101

Specific volume-এর dimension কী?

a.
[L³M⁻¹]
b.
[ML⁻³]
c.
[L²M⁻¹]
d.
[M⁻¹L⁻³]

Correct answer: a

Specific volume = volume/mass = [L³]/[M] = [M⁻¹L³]।

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315. MCQPractice set · Question 102

Specific gravity-এর dimension কোনটি?

a.
[ML⁻³]
b.
[1]
c.
[L³]
d.
[M]

Correct answer: b

Specific gravity দুই density-এর ratio, তাই dimensionless।

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316. MCQPractice set · Question 103

Gas constant R-এর dimension কী?

a.
[ML²T⁻²K⁻¹mol⁻¹]
b.
[MLT⁻²K⁻¹]
c.
[L²T⁻²K⁻¹]
d.
[ML²T⁻³K⁻¹]

Correct answer: a

PV = nRT থেকে R = energy/(amount × temperature), তাই [ML²T⁻²K⁻¹mol⁻¹]।

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317. MCQPractice set · Question 104

Avogadro constant-এর dimension কী?

a.
[mol⁻¹]
b.
[mol]
c.
[M⁻¹]
d.
[1] সব definition-এ

Correct answer: a

Avogadro constant = particles per mole, তাই dimension [mol⁻¹]।

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318. MCQPractice set · Question 105

Planck constant ও angular momentum-এর dimension কী?

a.
একই
b.
ভিন্ন
c.
h dimensionless
d.
angular momentum-এর dimension [T⁻¹]

Correct answer: a

Planck constant h ও angular momentum উভয়ের dimension [ML²T⁻¹]।

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319. MCQPractice set · Question 106

Electric field ও potential gradient-এর dimension সম্পর্ক কী?

a.
একই
b.
ভিন্ন
c.
দুটিই dimensionless
d.
একটির square

Correct answer: a

Electric field = potential difference/length; তাই potential gradient-এর dimension একই।

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320. MCQPractice set · Question 107

Magnetic flux density B-এর dimension নির্ণয়ে কোন relation ব্যবহার করা যায়?

a.
F = qvB
b.
F = ma²
c.
P = VI²
d.
E = mc

Correct answer: a

Charged particle-এর magnetic force F = qvB relation থেকে B-এর dimension নির্ণয় করা যায়।

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