1
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

The image of the centre of the circle $$x^2+y^2=a^2$$ with respect to the mirror $$x+y=1$$ is

A
$$\left(\frac{1}{\sqrt{2}}, \sqrt{2}\right)$$
B
$$(\sqrt{2}, \sqrt{2})$$
C
$$(\sqrt{2,2} \sqrt{2})$$
D
$$(-\sqrt{2}, 2)$$
E
None of these
2
VITEEE 2021
MCQ (Single Correct Answer)
+1
-0

The radius of the circle $$(x \cos \theta+y \sin \theta-a)^2+(x \sin \theta-y \cos \theta-b)^2=k^2$$ is

A
$$a^2+b^2-k^2$$
B
$$a \sin \theta-b \cos \theta$$
C
$$a^2+b^2$$
D
$$k$$
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