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হোম›নবম-দশম শ্রেণি›English Version›Science›C-10 — Let Us Know Force›C-10-Q077

C-10-Q077mediummulti_combo_mcq

Consider the following methods: Which of these methods are used to reduce friction?

smoothing the surface
using lubricants
using ball bearings

ai and ii
bii and iii
ci and iii
di, ii and iii

Kপূর্ববর্তী

77/94

Jপরবর্তী

এই অধ্যায়ের আরও প্রশ্ন

C-10-Q078Consider the following methods: Which of these methods are used to increase friction?
C-10-Q079Friction is called a "necessary nuisance" because—
C-10-Q080In winter, we rub our hands together to feel warm. This warmth is due to—
C-10-Q081Which of the following would be impossible without friction?
C-10-Q082A fruit falls on the ground from a tree — example of which type of force is it?
C-10-Q083A characteristic of force is that it— Which of the following is correct?
C-10-Q084A stationary object on the floor was acted upon by a 2-Newton force, resulting in an acceleration of . What is
C-10-Q085A stationary object on the floor was acted upon by a 2-Newton force, resulting in an acceleration of . When th
C-10-Q086A bus of mass 1400 kg accelerates at . The force acting on the bus is—
C-10-Q087When the driver of a moving bus suddenly hits the brakes, passengers lean forward because—

C-10 — Let Us Know Force — সব প্রশ্ন দেখুন (94টি) →