Self Studies
Self Studies
Self Studies
Self Studies

Ray Optics Test...

TIME LEFT -
  • Question 1
    4 / -1

    A concave lens of focal length 20 cm placed in contact with a plane mirror acts as a convex mirror of focal length

  • Question 2
    4 / -1

    An object is placed at a distance 20 cm from the pole of a convex mirror of focal length 20 cm. The image is produced at

  • Question 3
    4 / -1

    Which mirror is to be used to obtain a parallel beam of light from a small lamp?

  • Question 4
    4 / -1

    If two mirrors are kept at 60° to each other, then the number of images formed by them is

  • Question 5
    4 / -1

    Transmission of light to large distances through optical fibres is based on

  • Question 6
    4 / -1

    Critical angle of light passing from glass of water is minimum for

  • Question 7
    4 / -1

    The critical angle of the medium with respect to vacuum is 30°. If the velocity of light in vacuum is 3 × 108 ms-1, the velocity of light in medium is

  • Question 8
    4 / -1

    The instrument used by doctors for endoscopy works on the principle of

  • Question 9
    4 / -1

    If sound travelling at 340 ms-1 enters water where its speed becomes 1480 ms-1, then critical angle for total internal reflection is

  • Question 10
    4 / -1

    The earth radiates in the infra-red region of the spectrum. The spectrum is correctly given by

Submit Test
Self Studies
User
Question Analysis

  • Answered - 0

  • Unanswered - 10

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
Submit Test
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now