When an object is placed at the centre of curvature of a concave mirror, its image is formed at
the focus
infinity
the centre of curvature
a distance twice the radius of curvature
Correct answer is C
No explanation has been provided for this answer.
converging lens
diverging lens
converging mirror
parabolic mirror
Correct answer is C
No explanation has been provided for this answer.
2cm
9cm
16cm
18cm
Correct answer is D
No explanation has been provided for this answer.
Which of the following phenomena is not a direct consequence of rectilinear propagation of light?
lunar and solar eclipses
images of objects in a pin hole camera
diffraction of light
shadows of opaque object
Correct answer is C
No explanation has been provided for this answer.
0.1\(\pi\)
\(\pi\)
2\(\pi\)
10\(\pi\)
Correct answer is B
No explanation has been provided for this answer.