HTET Exam - Level 2 Tgt - Light

Which of the following sources gives best monochromatic light ?

The focal length and magnification of a plane mirror are :

A convex lens forms a real image of a point object placed on its principal axis. If the upper half of the lens is painted…

Match the Column-I with Column-II and choose the correct option : Column-I : Column-II (i) Ray through centre of curvature : (A) Reflect parallel rays…

A convex mirror has a radius of curvature of 3.0 m. If a object is located at 5 m from the mirror, then position of…

In which the following mirror is used as rear view in vehicle?

For refraction at a concave spherical surface (separating glass-air medium), the distance of the object should be greater than 'z' times the radius of curvature…

A printed page is kept pressed by a glass cube (µ = 1.5) of edge 6.0 cm. By what amount will the printed letters appears…

The refractive index of the material of the film is 1.25. The minimum thickness of a film which will strongly reflect the light of wavelength…

A transparent cube contains a small air bubble. Its apparent distance is 2 cm when seen through one face and 5 cm when seen through…