physics std 9 ct3 revision

Descrição

Middle physics Quiz sobre physics std 9 ct3 revision, criado por Shachi Narula em 10-11-2017.
Shachi Narula
Quiz por Shachi Narula, atualizado more than 1 year ago
Shachi Narula
Criado por Shachi Narula aproximadamente 7 anos atrás
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0

Resumo de Recurso

Questão 1

Questão
Image formed by a plane mirror is?
Responda
  • real
  • inverted
  • erect
  • virtual , erect

Questão 2

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

Questão 3

Questão
identify the type of reflection as shown in the picture.
Responda
  • regular
  • irregular

Questão 4

Questão
label the diagram
Responda
  • glance angle of incidence
  • glance angle of reflection

Questão 5

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

Questão 6

Questão
Look at the diagram and find i'
Responda
  • 25 degrees
  • 65 degrees

Questão 7

Questão
Complete the diagram
Responda
  • 60

Questão 8

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

Questão 9

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

Questão 10

Questão
find the angle of reflection .
Responda
  • 65 degrees
  • 25 degrees

Questão 11

Questão
observe the diagram and find the angle between the two plane mirrors.
Responda
  • 90 degrees
  • 60 degrees

Questão 12

Questão
observe the diagram and find the angle between the mirrors.
Responda
  • 120 degrees
  • 90 degrees

Questão 13

Questão
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.
Responda
  • 7 m
  • 10 m
  • 4 m

Questão 14

Questão
the image observed in the diagram is a virtual image.
Responda
  • True
  • False

Questão 15

Questão
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?
Responda
  • 62
  • 90

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