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Standard X

Mathematics

Right Circular Cylinder

Assertion: A ...

Question

Assertion: A cone is a solid figure.
Reason: A cone is generated when rectangular sheet is rotated about its axis.
Which of the following is correct?

If both assertion and reason are true and reason is the correct explanation of assertion

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If both assertion and reason are true but reason is not the correct explanation of assertion.

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If assertion is true but reason is false.

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If assertion is false but reason is true.

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Solution

The correct option is C If assertion is true but reason is false.
Assertion is true.
A cone is generated when a right angled triangle is rotated about its base. So, the reason is false.

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Similar questions

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Question 112

A rectangular sheet of dimensions $25 c m \times 7 c m$ is rotated about its longer side. Find the volume and the whole surface area of the solid thus generated.

Q. The triangle

A B C

has angle

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. The length of

A C

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Assertion: A cone is a solid figure. Reason: A cone is generated when rectangular sheet is rotated about its axis. Which of the following is correct?

The correct option is C If assertion is true but reason is false.Assertion is true. A cone is generated when a right angled triangle is rotated about its base. So, the reason is false.

Assertion: A cone is a solid figure.
Reason: A cone is generated when rectangular sheet is rotated about its axis.
Which of the following is correct?

The correct option is C If assertion is true but reason is false.
Assertion is true.
A cone is generated when a right angled triangle is rotated about its base. So, the reason is false.