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PRACTICE QUESTION BANK

আর্কিটেকচার

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রসায়ন

15 chapters

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গণিত

4 chapters

2500 questions2500 MCQ0 CQ
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ইংরেজি

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Questions

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521. MCQPractice set · Question 16

A = 6î + 8ĵ-এর unit vector কোনটি?

a.
6î+8ĵ
b.
3/5î+4/5ĵ
c.
4/5î+3/5ĵ
d.
î+ĵ

Correct answer: b

|A|=10; তাই Â=(6î+8ĵ)/10=3/5î+4/5ĵ।

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522. MCQPractice set · Question 17

A = 2î − 3ĵ-এর magnitude কত?

a.
1
b.
√5
c.
√13
d.
5

Correct answer: c

|A|=√(2²+(−3)²)=√13।

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523. MCQPractice set · Question 18

A = 2î − 3ĵ-এর y-component কত?

a.
2
b.
−3
c.
3
d.
−2

Correct answer: b

ĵ-এর coefficient হলো y-component, তাই −3।

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525. MCQPractice set · Question 20

Vector A-এর x-component কীভাবে পাওয়া যায়?

a.
A cosθ
b.
A sinθ
c.
A tanθ
d.
A/θ

Correct answer: a

x-axis-এর সঙ্গে θ angle হলে projection Aₓ=A cosθ।

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526. MCQPractice set · Question 21

Vector A-এর y-component কীভাবে পাওয়া যায়?

a.
A cosθ
b.
A sinθ
c.
A cotθ
d.
A² sinθ

Correct answer: b

y-projection Aᵧ=A sinθ।

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527. MCQPractice set · Question 22

A vector x-axis-এর সঙ্গে 0° angle করলে কোন component zero?

a.
x
b.
y
c.
দুটিই
d.
কোনোটিই নয়

Correct answer: b

Aᵧ=A sin0°=0; vector x-axis বরাবর।

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528. MCQPractice set · Question 23

A vector x-axis-এর সঙ্গে 90° angle করলে কোন component zero?

a.
x
b.
y
c.
দুটিই
d.
magnitude

Correct answer: a

Aₓ=A cos90°=0; vector y-axis বরাবর।

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529. MCQPractice set · Question 24

A=10, θ=30° হলে Aₓ কত?

a.
5
b.
5√3
c.
10√3
d.
10

Correct answer: b

Aₓ=10cos30°=5√3।

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530. MCQPractice set · Question 25

A=10, θ=30° হলে Aᵧ কত?

a.
5
b.
5√3
c.
10
d.
0

Correct answer: a

Aᵧ=10sin30°=5।

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