Anu Degree 3rd Sem Physics Important Questions. We covered all the Anu Degree 3rd Sem Physics Important Questions in this post for free so that you can practice well for the exam.
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Mock Test on Degree 3rd Sem Physics for Students
On a curved banked road safety speed of the vehicle is 20 m/s. The coefficient of friction between tyres and the road surface is 0.5 and is the angle of banking, tan q = 0.5 then the radius of the road should be :
(A) 10 m
(B) 20 m
(C) 30 m
(D) 40 m
Option c – 30 m
A circular track of radius 200 m is banked at an angle of 100, if the coefficient of fraction between wheels and the road surface is 0.3, then the maximum permissible speed to avoid skidding is :
(A) 10 m/s
(B) 15.7 m/s
(C) 31.4 m/s
(D) 62.8 m/s
Option c – 31.4 m/s
A circular road has a radius of 120m. A car can travel with a maximum speed of 60 m/s without skidding. If the angle of banking is 450. The coefficient of friction between tyres and the road surface is :
(A) 0.5
(B) 0.4
(C) 0.25
(D) 0.2
Option a – 0.5
A coin kept on a horizontal rotating disc has its centre at a distance of 25 cm from the axis of rotation of the disc. If the coefficient of friction is 0.2 then the angular speed of rotation of the disc at which the coin is about to slip off :
(A) 1.4 rad/s
(B) 2.8 rad/s
(C) 3.6 rad/s
(D) 0.7 rad/s
Option b – 2.8 rad/s
A circular road of radius 1000 m has a banking angle of 450. Its maximum speed so that a car with a mass of 2000 kg will not skid (coefficient of friction between tyres and road is 0.5) :
(A) 700 m/s
(B) 100 m/s
(C) 70 m/s
(D) 172 m/s
Option d – 172 m/s
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