Recent questions tagged refraction-and-dispersion-of-light

Description : We can see non luminous object ,when the light a) emitted by the object falls on the eye . b) is reflected from the object towards eye . c) completely passes through the object . d) gets completely absorbed by object .

Last Answer : b) is reflected from the object towards eye .

Description : If the incident ray falls directly on the normal. What will be the angle of incidence .? a ) 0 b)30 c)60 d)90

Last Answer : a ) 0

Description : The distance between Pole and Focus is called a) principal axis b)focal length c)radius of curvature d)centre of curvature

Last Answer : b)focal length

Description : The size of the image formed by a plane mirror is a) bigger than the object b)same as object c)smaller than the object d)far away from the object .

Last Answer : b)same as object

Description : Diffused reflection takes place through a) metal b)glass c)wood d)thin transparent sheet

Last Answer : c)wood

Description : 147 A ray directed towards the centre of curvature of a spherical mirror a) become parallel to principal axis b)retraces its path c)appears to diverge from focus d)passes through focus.

Last Answer : b)retraces its path

Description : A concave mirror forms real, inverted and enlarged image at infinity. Where is the object kept a) at F b)at C c)between F and C d)beyond C

Last Answer : a) at F

Description : The distance of the object from the plain mirror is 1.5 cm . What will be the total distance between the object and its image. a) 1.5cm b)3cm c)2.5cm d)1cm

Last Answer : b)3cm

Description : The phenomenon of interchange of the left side and right side between the object and its image is called_________. a) reflection b)refraction c)dispersion d)lateral inversion

Last Answer : d)lateral inversion

Description : A concave lens always forms a virtual, erect and ________ image . a) same b)magnified c)diminished d)none

Last Answer : c)diminished

Description : When object is placed _______ in front of convex lens than image formed is virtual, erect, magnified and on same side beyond F . a) between optical centre and F b)At F c)between F and 2F d)2F

Last Answer : a) between optical centre and F

Description : In case of convex lens when the image formed is real, inverted and same size as the object then the object should have been at ______ position of lens. a) infinity b)focus c)2F d)between F and 2F

Last Answer : c)2F

Description : When beam of parallel rays of light falls on _______ then all the rays of light converge . a) convex lens b)concave lens c)plain mirror d)plano concave lens

Last Answer : a) convex lens

Description : _____ is natural phenomenon associated with dispersion of sunlight. a) rainbow b)reflection c)dispersion d)refraction

Last Answer : a) rainbow

Description : The white light after falling on prism gets split into seven colours due to _______ of light. a) reflection b)refraction c)dispersion d)bend

Last Answer : c)dispersion

Description : When light moves from air to water the ray of light bends ________ the normal. a) away b)towards c)along d)no change

Last Answer : b)towards

Description : When a pencil is dipped in glass of water it appears bent near the surface of water due to ______ of light. a) refraction b)reflection c)bouncing back of light d)none

Last Answer : a) refraction

Description : When light falls on shiny surface it gets __________ . a) refracted b)reflected c)bent d)nothing happens

Last Answer : b)reflected