NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 816 - 820 of 2142

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Question number: 816

» Work, Energy and Power » Work Done

MCQ▾

Question

The work done in pulling a body of mass 5 kg along an inclined plane (angle 60°) with coefficient of friction 0.2 through 2 m, will be -

Choices

Choice (4) Response

a.

94.08 J

b.

91.08 J

c.

98.08 J

d.

90.08 J

Question number: 817

» Work, Energy and Power » Work Done

MCQ▾

Question

The work done in lifting water from a well of depth 6 m using a bucket of mass 0.4 kg and volume 2 liter, will be

Choices

Choice (4) Response

a.

98 J

b.

141.12 J

c.

73.5 J

d.

147 J

Question number: 818

» Kinematics » Average Speed and Instantaneous Velocity

MCQ▾

Question

In the above example, the height ascended or descended, as the case may be, during that time i. e. 4 sec will be -

Choices

Choice (4) Response

a.

1.744 m

b.

0.1744 m

c.

17.44 m

d.

All of the above

Question number: 819

» Kinematics » Uniformly Accelerated Motion

Assertion-Reason▾

Assertion (Ꭺ)

In figure the ground is smooth and the masses of both the blocks are different. Net force acting on each of block is not same.

Reason (Ꭱ)

Acceleration of the both blocks will be different.

Net force acting on each of block

Net Force Acting on Each of Block

Finding force and acceleration on both blocks

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Ꭺ is false but Ꭱ is true

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 820

» Work, Energy and Power » Work Done

MCQ▾

Question

A man pushes a wall and fails to displace it. Choose incorrect statements related to his work

(1) Negative work

(2) Positive but not maximum work

(3) Maximum work

(4) No work at all

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1 and 2 are correct

c.

1 and 3 are correct

d.

1, 2 and 3 are correct

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