SSC Scientific Assistant: Physics Quiz 2

In the Bohr model of the hydrogen atom the lowest orbit corresponds to

A ray of light passes from vaccum into a medium of refractive index n. If the angle of indence is twice the angle of refraction then the angle of incidence is

A bulb is placed between two plane mirrors inclined at an angle of 60⁰. The number of images formed is

When light passes from one medium to another, the physical quantity that remains unchanged is

Astigmatism for a human eye can be removed by using

The image of an object formed by a device is always virtual and small. The device may be

Focal length of a convex lens is maximum for

How many images will be formed if two mirrors are fitted on adjacent walls and one mirror of celling.

Diameter of a plano-convex lens is 6 cm and thickness at the center is 3 mm. If the speed of light in the material of the lens is 2 x 10⁸ meter per second, the focal length of the lens is

The image of an object formed by a device is always virtual and small. The device may be