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Friction and Applications MCQs for Competitive Exams

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Friction and Applications MCQs for Competitive Exams

Practice with answers, explanations, and exam-focused revision notes.

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Topic Notes: Friction and Applications

These notes summarize the key preparation context before you attempt the MCQs. Review the topic focus, then practice the questions below with answers and explanations.

Quick Overview

Friction and Applications MCQs in Physics are useful for candidates who need targeted practice for CSS, PMS, FPSC, PPSC, NTS, entry tests, and other competitive exams in Pakistan. This topic page is designed for quick revision, repeated practice, and exam-focused preparation.

Attempt the questions page by page, check the correct answers, read the explanations where available, and compare your weak areas with past papers and mock test performance. Consistent MCQ practice improves speed, confidence, and retention for objective exam sections.

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11
A car travelling at a speed of 30 kilometres per hour is brought to a halt in 8 metres by applying brakes. If the same car is travelling at 60 km per hour, it can be brought to a halt with the same braking force in
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12
As the speed of droplet moving in a fluid increases, the drag force on it approaches:
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13
A copper ball of radius r is moving with uniform velocity v in mustard oil. The dragging force acting on the copper ball of radius 2r moving with uniform velocity 2v in mustard oil is
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14
A capillary tube is attached horizontally to a constant pressure head arrangement. If the radius of the capillary tube is increased by 10%, then the rate of flow of the liquid shall change nearly by
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15
321. If a ladder weighing 250 N is placed against a smooth vertical wall having coefficient of friction between it and floor is 0.3, then what is the maximum force of friction available at the point of contact between the ladder and the floor?
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16
A small steel ball falls through water more slowly than through air primarily because of
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17
262. A cube of 10 N rests on a rough inclined plane of slope 3 in 5. The coefficient of friction is 0.6. The minimum force necessary to start the cube moving up the plane is
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18
143. A 40 kg slab rests on a frictionless floor as shown. A 10 kg block rests on the slab. The static coefficient of friction between the block and the slab is 0.60 while the coefficient of kinetic friction is 0.40. The 10 kg block is acted upon by a horizontal force 150 N. If g = 9.8 ms^-2, the resulting acceleration of the slab will be
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19
According to Stoke's law, the droplet of mass 'm' moving through a fluid experiences a drag force 'F' given by the relation 6πην:
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20
148 The product of velocity and cross-sectional area for a liquid flowing through a pipe is a measure of the
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