Advertisements
Advertisements
Question
A ray of light strikes a plane mirror PQ at an angle of incidence of 30°, is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is ______.
Options
30°
45°
60°
90°
Advertisements
Solution
A ray of light strikes a plane mirror PQ at an angle of incidence of 30°, is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is 60°.
APPEARS IN
RELATED QUESTIONS
Write all the capital letters of the alphabet which look the same in a plane mirror.
A coin in a glass tumbler appears to rise as the glass tumbler is slowly filled with water. Name the phenomenon responsible for this effect.
State two factors on which the lateral displacement of the emergent ray depends.
How does the light have to enter the glass:
to produce a large amount of bending?
Air is optically .......... than glass.
When a ray of light travels from water to air, it bends ............. the normal.
When a ray of light travels from air to glass, it bends .......... the normal.
We can see the sun even when it is little below the horizon because of ______.
Choose and write the correct option.
If we gradually increase the angle of incidence of a ray of light passing through prism then …..
Define the principal focus of a concave mirror.
Light changes its direction when going from one transparent medium to another transparent medium. This is called _______.
Why does a ray of light bend when it travels from one medium to another?
What is refractive index?
Which object use the reflection of light?
Which surface will not reflect most of the light falling on them?
Light bends as it passes from one medium to another. What is this phenomenon called?
The bending of light as it passes from one medium to another is called ______.
A ray of light traveling in medium 1 strikes and travels into another transparent medium 2. If the speed of light is greater in medium 1, the ray will ______.
Mirage is an example of refraction and the total internal reflection of light.
Which is optically denser out of the two medium M1& M2 having the refractive indices = 1.71 and 1.36 respectively?
