Work, Energy and Power-Work Done [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 7 - 11 of 67
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Question 7
Question MCQ▾
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 8
Question MCQ▾
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. | 1,2 and 3 are correct | |
b. | 2 and 4 are correct | |
c. | 1 and 3 are correct | |
d. | 1 and 2 are correct |
Question 9
Question MCQ▾
An object of mass 5 kg falls from rest through a vertical distance of 20 m and reaches a velocity of 10 m/s. How much work is done by the push of the air on the object? (g = 10 m/s2) .
Choices
Choice (4) | Response | |
---|---|---|
a. | 300 J | |
b. | 750 J | |
c. | 200 J | |
d. | 350 J |
Question 10
Question MCQ▾
A chain of linear density 3 kg/m and length 8 m is lying on the table with 2 m of chain hanging from the edge. The work done in lifting the chain on the table will be –
Choices
Choice (4) | Response | |
---|---|---|
a. | 4.8 J | |
b. | 17.6 J | |
c. | 1.6 J | |
d. | 5.2 J |
Question 11
Question MCQ▾
A chain of linear density 3 kg/m and length 8 m is lying on the table with 4 m of chain hanging from the edge. The work done in lifting the chain on the table will be –
Choices
Choice (4) | Response | |
---|---|---|
a. | 98 J | |
b. | 235.2 J | |
c. | 196 J | |
d. | 117.6 J |