A sound wave hits a brick wall at 36 from the normal. At what angle does it reflect?
0%
126o
0%
63o
0%
54o
0%
36o
Q.2.
A hiker shouts to their friend and 4 seconds later hears an echo of their shout. If sound travels at 330 m/s, how far away was the cliff that reflected their shout?
0%
At least 2 km
0%
About 1.5 km
0%
Exactly 1,320 m
0%
660 m
Q.3.
Electromagnetic radiation travels in straight lines, so how come certain radio waves can be detected on the other side of the world without using artificial satellites?
0%
Earth's gravity causes them to bend round
0%
They reflect off a layer in the Earth's atmosphere
0%
They can pass directly through the Earth
0%
When they get to the edge of the atmosphere they are trapped by space
Q.4.
When you look at yourself in a mirror, your image is:
0%
real and identical to you
0%
virtual and identical to you
0%
real and laterally inverted
0%
virtual and laterally inverted
Q.5.
A solar furnace can be used to cook food in sunny places where it is difficult to obtain other fuels. It works by reflecting and focussing the Sun's heat. What would be the best shape and material for a solar furnace?
0%
Flat, dark and matt
0%
Concave, light coloured and shiny
0%
Convex, light coloured and matt
0%
Flat, grey and shiny
Q.6.
The location of a virtual image in a plane mirror appears to be where?
0%
The same distance behind the mirror as the object is in front
0%
The same place as the object
0%
Behind the mirror but at half the distance of the object
0%
Behind the mirror but at twice the distance of the object
Q.7.
What is an incident ray of light?
0%
A ray of light that the police shine when there has been an incident on the road
0%
A ray of light that is leaving the surface of a mirror
100%
A ray of light that is hitting the surface of a mirror
0%
A ray of light that is shining parallel to the surface of a mirror
Q.8.
What is a virtual image?
0%
An image that can be projected onto a screen
0%
An image that can't be projected onto a screen
0%
An image that is virtually perfect
0%
An image of a person only
Q.9.
Which of the following statements about reflection is true?
0%
Echoes only occur in the countryside
100%
The angle of incidence is the same as the angle of reflection
0%
The normal is drawn as a dotted or dashed line on ray diagrams
0%
Rough surfaces scatter sound in all directions
Q.10.
On ray diagrams, what is the normal?
0%
An imaginary line at 90o to the reflecting surface
0%
An imaginary line at 45o to the reflecting surface
0%
A real line at 90o to the reflecting surface
0%
A real line at 180o to the reflecting surface
Support mcqgeeks.com by disabling your adblocker.
Please disable the adBlock and continue. Thank you.