physics std 9 ct3 revision

Description

Middle physics Quiz on physics std 9 ct3 revision, created by Shachi Narula on 10/11/2017.
Shachi Narula
Quiz by Shachi Narula, updated more than 1 year ago
Shachi Narula
Created by Shachi Narula over 6 years ago
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Resource summary

Question 1

Question
Image formed by a plane mirror is?
Answer
  • real
  • inverted
  • erect
  • virtual , erect

Question 2

Question
Whenever a ray of light comes back into the same medium after striking the surface of another medium is called
Answer
  • reflection
  • refraction
  • absorption

Question 3

Question
identify the type of reflection as shown in the picture.
Answer
  • regular
  • irregular

Question 4

Question
label the diagram
Answer
  • glance angle of incidence
  • glance angle of reflection

Question 5

Question
Look at the diagram and find the glance angle of incidence .
Answer
  • 45 degrees
  • 90 degrees
  • 0 degrees

Question 6

Question
Look at the diagram and find i'
Answer
  • 25 degrees
  • 65 degrees

Question 7

Question
Complete the diagram
Answer
  • 60

Question 8

Question
Light is falling on the surfaces s1 , s2 and s 3. surfaces on which angle of incidence is equal to angle of reflection are
Answer
  • s1 only
  • s1 and s2
  • s2 and s3
  • all three surfaces

Question 9

Question
A plane mirror produces an image which is erect , [blank_start]virtual[blank_end] and [blank_start]laterally inverted[blank_end].
Answer
  • laterally inverted
  • virtual

Question 10

Question
find the angle of reflection .
Answer
  • 65 degrees
  • 25 degrees

Question 11

Question
observe the diagram and find the angle between the two plane mirrors.
Answer
  • 90 degrees
  • 60 degrees

Question 12

Question
observe the diagram and find the angle between the mirrors.
Answer
  • 120 degrees
  • 90 degrees

Question 13

Question
In the diagram below, a person is standing 5 meters from a plane mirror. The chair in front of the person is located 2 meters from the mirror.
Answer
  • 7 m
  • 10 m
  • 4 m

Question 14

Question
the image observed in the diagram is a virtual image.
Answer
  • True
  • False

Question 15

Question
A ray of light strikes a plane mirror at a 45° angle of incidence. The mirror is then rotated by α =31° into the position shown in red in the drawing, while the incident ray is kept fixed. By what angle is the reflected ray rotated?
Answer
  • 62
  • 90
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