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Questions
0 read · 0 practiced · 0 answered in examsTorque-এর dimension কোনটি?
Correct answer: b
Torque = force × perpendicular distance, তাই [MLT⁻²][L] = [ML²T⁻²]।
Angular momentum-এর dimensional formula কী?
Correct answer: b
Angular momentum = linear momentum × distance = [MLT⁻¹][L] = [ML²T⁻¹]।
Moment of inertia-এর dimension কী?
Correct answer: b
Moment of inertia = mass × distance², তাই [ML²]।
Gravitational constant G-এর dimension কোনটি?
Correct answer: a
F = Gm₁m₂/r² থেকে G = Fr²/(m₁m₂), তাই [M⁻¹L³T⁻²]।
Acceleration due to gravity g-এর dimension কী?
Correct answer: c
g একটি acceleration, তাই এর dimension [LT⁻²]।
Spring constant-এর dimension কোনটি?
Correct answer: b
Hooke law F = kx থেকে k = F/x = [MLT⁻²]/[L] = [MT⁻²]।
Coefficient of friction-এর dimension কী?
Correct answer: c
Coefficient of friction = frictional force/normal force; একই dimension-এর ratio হওয়ায় এটি dimensionless।
Strain-এর dimension কোনটি?
Correct answer: c
Strain = change in length/original length, তাই dimensionless।
Stress-এর dimension কী?
Correct answer: b
Stress = force/area; তাই pressure-এর মতো [ML⁻¹T⁻²]।
Young modulus-এর dimension কোনটি?
Correct answer: b
Young modulus = stress/strain; strain dimensionless, তাই Young modulus-এর dimension stress-এর মতো।