ICSE Physics Class 10 Current Electricity Important Questions. We covered all the ICSE Physics Class 10 Current Electricity Important Questions in this post for free so that you can practice well for the exam.
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Class 10 Current Electricity Mock Test for Students
Two discs have the same mass and thickness. Their material is of densities d₁ and d₂. The ratio of their moments of inertia about an axis passing through the centre and perpendicular to the plane is :
(A) d₁ : d₂
(B) d₂ : d₁
(C) 1 : d₁d₂
(D) d₁d₂ : 1
Option b – d₂ : d₁
The diameter of a flywheel is increased by 1.5%. What is the percentage increase in M.I. about the central axis?
(A) 1.5%
(B) 2%
(C) 0.5%
(D) 3%
Option d – 3%
Two rings of each of mass 1 kg and radius 1 m are placed such that their centres coincide with each other and planes are perpendicular to each other. The moment of inertia about an axis passing through the centre is :
(A) 1.5 kg m²
(B) 0.5 kg m²
(C) 0.25 kg m²
(D) 3 kg m²
Option a – 1.5 kg m²
A solid cylinder of material of density 7000 kg/m³ has a radius of 10 cm and a height of 1 m. Moment of inertia of this cylinder about its axis :
(A) 1100 kg m²
(B) 1.1 kg m²
(C) 2200 kg m²
(D) 220 kg m²
Option b – 1.1 kg m²
The moment of inertia of a metre scale of mass 0.6 kg about an axis perpendicular to the scale and located at the 20 cm position on the scale is : (Breadth of the scale is negligible)
(A) 0.074 kg m²
(B) 0.104 kg m²
(C) 0.148 kg m²
(D) 0.208 kg m²
Option b – 0.104 kg m²
If the diameter of the flywheel increases by 1%, then the increase in its M.I. about an axis passing through the centre and perpendicular to the plane will be :
(A) 0.5 %
(B) 1%
(C) 2%
(D) 4%
Option c – 2%
The moment of inertia of a solid sphere about its diameter is I. If that sphere is recast into 8 identical small spheres, then the moment of inertia of such a small sphere about its diameter is :
(A) I/8
(B) I/16
(C) I/24
(D) I/32
Option d – I/32
The radius of a ring is 2 cm and its mass is 20 g. Its MI is about an axis passing through the centre and Hiperpendicular to the plane :
(A) 10 gm cm²
(B) 20 gm cm²
(C) 40 gm cm²
(D) 80 gm cm²
Option d – 80 gm cm²
We covered all the icse physics class 10 current electricity important questions above in this post for free so that you can practice well for the exam.
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