Ncert- science – class 7- Chapter 11 – Light 2 Welcome to your Ncert- science – class 7- Chapter 11 – Light 2 1. We can see a non-luminous object when light : emitted by the object falls on the eye is reflected from the object towards our eye gets completely absorbed by the object completely passes through the object None 2. The concave mirrors are used in: Reflecting telescope Magic-lanterns All of these Cinema projectors None 3. The image formed by a plane mirror is always ______ inverted. Really Virtually Laterally None of these None 4. A ray of light is incident on a plane mirror at an angle of incidence 30 degree to the normal. The ray after reflection is deviated with an angle of: 120 degree 30 degree 50 degree 40 degree None 5. Which mirror should be used to obtain a parallel beam of light from a small lamp? Concave mirror None of the above Convex mirror Plane mirror None 6. A plane mirror:(i) can form real image of a real object(ii) neither converges not diverges the rays(iii) cannot form real image of a real objectChoose the correct option or options. (i) is correct (ii) and (iii) are correct (i) and (ii) are correct None of the above None 7. A diminished virtual image can be formed only in:- A convex mirror A concave mirror plane mirror Concave-parabolic mirror. None 8. A virtual image is one which: Sometimes can be and sometimes cannot be taken on a screenpp Cannot be taken on a screen Can be taken on a screen Is formed only by a concave mirror None 9. Select the correct alternative:The property due to which a light ray striking a surface and returned back into the same medium is called reflection refraction reflex action regression None 10. The mirror used in search lights is: None of these Plane Convex Concave None 11. When a convergent beam of light is incident on a plane mirror, the image formed is Inverted and virtual Upright and real Upright and virtual Inverted and real None 12. When a convergent beam of light is incident on a plane mirror, the image formed is Inverted and virtual Inverted and real Upright and real Upright and virtual None 13. Which of the following can produce a virtual image for any position of the object? All of the above Concave mirror Plane mirror Convex lens None 14. Mirror used as rear view mirror is Concave Plane Either convex or concave Convex None 15. ...... images cannot be caught on a screen. Erect Real Virtual Inverted None Time's up Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
