This document covers some of the important points to be kept in mind for CBSE class 10 physics chapter - Light, Reflection and Refraction such as how to take care of the sign conventions which most...
disney pdf piano
transducer numericals machine measurement
Full description
Full description
Full description
abm numericals caiib
This document includes all numericals related to data link layer.
RCCDesign Numenricals
All rations for Finance Calculations
engineering study material
Descripción: Chemistry solve by numerical methods
wetgwsagsdfFull description
reflectionDescrição completa
Mulan Reflection, piano part
DisneyDescripción completa
How to see light and use off camera flash. Improve your photographyFull description
The incident ray makes an angle of 30° with the surface of a plane mirror. Find the angle of reflection. (Ans: 60°)
2.
A light ray strikes a flat, smooth, reflecting surface at an angle of 80° to the normal. What is the angle that the reflected ray makes with the surface of the mirror? (Ans: 10°)
3.
Light from a laser strikes a plane mirror at an angle of 38° to the normal. If the laser is moved so that the angle of incidence increases by 13°, what is the new angle of reflection? (Ans: 51°)
4.
A plane mirror is approaching you at a speed of 10 cm/sec. You can see your image in it. At what speed will your image approach you? (Ans: 20 cm/sec)
5.
Two plane mirrors are positioned at right angles to one another. A ray of light strikes one mirror at an angle of 30° to the normal. It then reflects toward the second mirror. What is the angle of reflection of the light l ight ray off the second mirror? (Ans: 60°)
6.
An object is 36.0 cm in front of a concave mirror with a 16.0 cm focal length. Determine the image position. (Ans: -28.8 cm)
7.
A 3.0 cm tall object is 20.0 cm from a 16.0 cm radius concave mirror. Determine the image position and image height. (Ans: -2.0 cm)
8.
A concave mirror has a 7.0 cm focal length. A 2.4 cm tall object is 16.0 cm from the mirror. Determine the image height. (Ans: -1.9 cm)
9.
An object is near a concave mirror of 10.0 cm focal length. The image is 3.0 cm tall, inverted, and 16.0 cm from the mirror. What are the object position and object height? (Ans: u = 26.7 cm, ho=5.0 cm)
10.
An object of 4 cm height is placed at a distance of 18 cm from concave mirror having focal length 12 m. Find the position, nature and height of the image. (Ans: v= -36 cm, cm, height of image = - 8 cm)
11.
A dentist mirror (concave) has a radius of curvature of 3 cm. How far must it be placed from a small dental cavity to give virtual image of cavity that is magnified 5 times? (Ans: - 1.2 cm)
12.
An object of 5 cm height is placed at a distance of 12 cm in front of a concave mirror. It forms a real image 4 times larger than the object. Calculate the distance of the image from the mirror. (Ans: - 48 cm, image is at a distance 48 cm from the mirror on the same side of the object .) object .)
13.
An object 4 cm. in size is placed at 25 cm. in front of concave mirror of focal length 15 cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image? Find the nature and the size of the image. (Ans: v=-37.5 cm, h’= -6 cm, inverted and enlarged )
