मराठी
तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ८

Match the following. Convex mirror Radio telescopes Parobolic mirror Rear – view mirror Snell’s law Kaleidoscope Dispersion of light sin i/sin r =μ Refractive index Rainbow - Science

Advertisements
Advertisements

प्रश्न

Match the following.

Convex mirror Radio telescopes
Parobolic mirror Rear – view mirror
Snell’s law Kaleidoscope
Dispersion of light sin i/sin r =μ
Refractive index Rainbow
जोड्या लावा/जोड्या जुळवा
Advertisements

उत्तर

Convex mirror Rear – view mirror 
Parobolic mirror Radio telescopes
Snell’s law sin i/sin r =μ 
Dispersion of light Rainbow
Refractive index Kaleidoscope
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Light - Exercises [पृष्ठ ३३]

APPEARS IN

सामाचीर कलवी Science [English] Class 8 TN Board
पाठ 3 Light
Exercises | Q III. | पृष्ठ ३३

संबंधित प्रश्‍न

It is desired to obtain an erect image of an object, using concave mirror of focal length of 12 cm.

Where will the image of this object be, if it is placed 24 cm in front of the mirror? Draw ray diagram for this situation also justify your answer. Show the positions of pole, principal focus and the centre of curvature in the above ray diagrams


We wish to obtain an erect image of an object, using a concave mirror of focal length 15 cm. What should be the range of distance of the object from the mirror? What is the nature of the image? Is the image larger or smaller than the object? Draw a ray diagram to show the image formation in this case.


An object is placed at a distance of 12 cm in front of a concave mirror of radius of curvature 30 cm. List four characteristics of the image formed by the mirror.


Draw the following diagram in your answer book and show the formation of image of the object AB with the help of suitable rays:


The angle of incidence for of light passing through the centre of curvature of a concave mirror is:

(a) 45°
(b) 90°
(c) 0°
(d) 180°


An object is placed 15 cm from (a) a converging mirror, and (b) a diverging mirror, of radius of curvature 20 cm. Calculate the image position and magnification in each case. 


Which of the following can make a parallel beam of light from a bulb falls on it?

(a) concave mirror as well as concave lens
(b) convex mirror as well as concave lens
(c) concave mirror as well as convex lens
(d) concave mirror as well as convex lens


A student obtained a sharp image of the grills of a window on a screen using a concave mirror. His teacher remarked that for getting better results a well lit distant object (preferably the sun) should be focussed on the screen. What should be done for this purpose?

(A) Move the screen slightly away from the mirror

(B) Move the mirror slightly towards the screen

(C) Move the screen and the mirror away from the object

(D) Move the screen and the mirror towards the object


______ mirrors make things look larger when objects are placed close to them.


The focal length of a concave mirror is 5cm. Its radius of curvature is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×