CBSE Class 10 Light Reflection and Refraction — practice questions
38 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 10 Light Reflection and Refraction in the app →According to the laws of reflection, the angle of reflection equals:The image formed by a plane mirror is:A spherical mirror whose reflecting surface curves inwards (towards the centre of the sphere) is called:For a spherical mirror of small aperture, the relation between radius of curvature R and focal length f is:A concave mirror has a radius of curvature of 20 cm. Its focal length is:A concave mirror is used as a shaving mirror because, when the face is held within its focal length, it producWhich mirror is used as a rear-view mirror in vehicles?An object is placed at the centre of curvature C of a concave mirror. Its image is:The New Cartesian Sign Convention takes distances measured against the direction of incident light as:In the mirror formula 1/v + 1/u = 1/f, what does u represent?An object is placed 30 cm in front of a concave mirror of focal length 10 cm. The image distance is:Magnification m for a spherical mirror is given by:A 4 cm tall object placed at 20 cm gives an image at -40 cm (concave mirror). The image is:When light passes from a rarer medium to a denser medium, it bends:The absolute refractive index of a medium is the ratio of:The refractive index of water is 1.33. The speed of light in water (in m/s) is approximately:A ray of light travels from air into a glass slab. Which of the following changes is correct?In a glass slab, a ray of light is refracted twice. The emergent ray is:A convex lens forms a real image when the object is placed:Power of a lens is measured in:A lens has focal length 50 cm. Its power is:A concave lens has a focal length of -25 cm. Its power is:Two thin lenses of power +3 D and -1 D are kept in contact. The net power is:A concave mirror with focal length 20 cm forms an image at 30 cm in front of it. The object is at:For a concave mirror, magnification is +3 (virtual, erect, enlarged). If image is at +60 cm, object is at:Which property of the image makes a convex mirror preferred for rear-view?Lateral inversion in a plane mirror means:Refractive index of medium A with respect to medium B is given by:Light travelling from air strikes a water surface at 0° to the normal. The angle of refraction is:A pencil partially dipped in water appears bent at the surface. This is due to:A convex lens of focal length 20 cm produces a real image at distance 60 cm. The object is at:A real image formed by a convex lens is:The principal focus of a concave lens is:A lens forms an image of an object placed at twice its focal length. The image is:When you look at your face in a steel spoon's inner curved surface, the image is:Why does a concave mirror used as a torch reflector produce a parallel beam?The focal length of a plane mirror is:A diverging lens is also called: