Why does a solid sphere have smaller moment of inertia than a hollow cylinder of same mass and radius, about an axis passing through their axes of symmentry ?
Which mirror has a wider field of view ?
A Galilean telescope has objective and eyepiece of focal lengths 200 cm and 2cm respectively. The magnifying power of the telescope for normal vision is
A Galilean telescope has objective and eye - piece of focal lengths 200 cm and 2cm respectively. The magnifying power of the telescope for normal vision is
Why does not a diesel engine have a spark plug ?
Which of the following have a wider field of view ? (a) Animals having two eyes on the opposite sides of their head. (b) Animals having two eyes at the front of their head.
Does Mars have a magnetic field like Earth?
Why does 'Swiss cheese' have big holes?
The mirror used in automobiles to see the rear field of view is
