NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 905 - 908 of 2320

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Question number: 905

» Laws of Motion » Force and Inertia

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MCQ▾

Question

In the above question, if at the end of 4 sec, the string be cut, the position of each particle in next 2 seconds will respectively be -

Choices

Choice (4)Response

a.

-17.856 m, 21.344 m

b.

-21.344 m, 17.856 m

c.

-17.856 m, -21.344 m

d.

17.856 m, 21.344 m

Question number: 906

» Work, Energy and Power » Work-Energy Theorem

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Question

The stopping distance for a vehicle of mass M moving with a speed v along a level road, will be - (u is the coefficient of friction between tyres and the road)

Choices

Choice (4)Response

a.

b.

c.

d.

Question number: 907

» Work, Energy and Power » Work Done

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MCQ▾

Question

A force F = (9 - 4x + 6x 2) N is applied on a 2 kg mass which displaces it from x = 0 to x = 5 m. Work done in joule is -

Choices

Choice (4)Response

a.

135

b.

270

c.

245

d.

70

Passage

Read the passage given below and answer the questions that follow:

A small particle of mass m/10 is moving horizontally at a height of 3R/2 from ground with velocity 10 m/s. A perfectly inelastic collision occurs at point P of sphere of mass m placed on smooth horizontal surface. The radius of sphere is R, (m = 10 kg and R = 0.1 m) (Assume all surfaces to be smooth).

Sphere of radius R – In perfect inelastic collision

Sphere of Radius R – in Perfect Inelastic Collision

Question number: 908 (1 of 3 Based on Passage) Show Passage

» Kinematics » Average Speed and Instantaneous Velocity

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MCQ▾

Question

A small particle of mass m/10 is moving horizontally at a height of 3R/2 from ground with velocity 10 m/s. A perfectly inelastic collision occurs at point P of sphere of mass m placed on smooth horizontal surface. The radius of sphere is R, (m = 10 kg and R = 0.1 m) (Assume all surfaces to be smooth).

Sphere of radius R – explained in this diagram

Sphere of Radius R – Explained in this Diagram

Speed of sphere just after collision is

Choices

Choice (4)Response

a.

40/43 m/s

b.

27/43 m/s

c.

35/43 m/s

d.

30/43 m/s

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