Advertisements
Advertisements
Question
Solution
Three distinctions between light and sound waves are
(a). Light waves can travel through a vacuum while sound waves cannot.
(b). Light waves are transverse waves while sound waves are longitudinal waves.
(c). The velocity of light in air is 3 x 108 m/s while the speed of light in air is just about 330 m/s.
APPEARS IN
RELATED QUESTIONS
What do you mean by reflection of light?
With the help of diagrams, explain the difference between the regular and irregular reflection.
An object 3 cm high produces a real image 4.5 cm high when placed at a distance of 20 cm from a concave mirror. Calculate:
- the position of image
- focal length of the concave mirror.
You are provided a convex mirror, a concave mirror and a plane mirror. How will you distinguish between them, without touching or using any other apparatus?
Locate the image termed when the object is placed between two planes as shown in the following figure.
Which of the following is the best reflector of light?
Differentiate between a reflection and a shadow
Which position of the object will produce a magnified virtual image, if a concave mirror of focal length 15 cm is being used?
Beams of light are incident through the holes A and B and emerge out of box through the holes C and D respectively as shown in the Figure Which of the following could be inside the box?
Plane mirrors are used as looking glass, to reflect light on objects and in periscopes.