Ray Optics and Optical Instruments questions
782 published questions with worked solutions.
- The refractive index of a converging lens is 1.4. What will be the focal length of this lens if it is placed in a medium of same...
- Red light differs from blue light as they have :
- A deviation of 2° is produced in the yellow ray when prism of crown and flint glass are achromatically combined. Taking...
- The image of an object placed in air formed by a convex refracting surface is at a distance of 10 m behind the surface. The image...
- The thickness at the centre of a plano convex lens is 3 mm and the diameter is 6 cm. If the speed of light in the material of the...
- An object viewed from a near point distance of 25 cm, using a microscopic lens with magnification '6', gives an unresolved image....
- A ray of light passing through a prism ( = 3)suffers minimum deviation. It is found that the angle of incidence is double the...
- The focal length f is related to the radius of curvature r of the spherical convex mirror by:
- The expected graphical representation of the variation of angle of deviation ' ' with angle of incidence 'i' in a prism is :
- An object is placed beyond the centre of curvature C of the given concave mirror. If the distance of the object is d_1 from C and...
- An object is placed at the focus of concave lens having focal length f. What is the magnification and distance of the image from...
- The same size images are formed by a convex lens when the object is placed at 20cm or at 10cm from the lens. The focal length of...
- A prism of refractive index and angle of prism A is placed in the position of minimum angle of deviation. If minimum angle of...
- A ray of laser of a wavelength 630 nm is incident at an angle of 30° at the diamond-air interface. It is going from diamond to...
- Car B overtakes another car A at a relative speed of 40 ms^ -1 . How fast will the image of car B appear to move in the mirror of...
- Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion (A) : For a...
- The incident ray, reflected ray and the outward drawn normal are denoted by the unit vectors a , b and c respectively, Then...
- A short straight object of height 100 cm lies before the central axis of a spherical mirror whose focal length has absolute value...
- Two identical thin biconvex lenses of focal length 15 cm and refractive index 1.5 are in contact with each other. The space...
- A ray of light is incident at an angle of incidence 60° on the glass slab of refractive index 3 . After refraction, the light ray...
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