When an object is placed at the centre of curvature of a ...
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.
Which of the units of the following physical quantities are derived? I. Area II. Thrust III. Pres...
An induction coil is generally used to? ...
"Sum of all forces acting on a body is zero." This condition represents equilibrium' ...
The resultant of two forces P and Q is least when the angle between them is ...
If the efficiency of a transformer is 100%, which of the following equations would be correct? ...