Self Studies
Self Studies
Self Studies
Self Studies
Selfstudy
Selfstudy

Ray Optics and ...

TIME LEFT -
  • Question 1
    4 / -1

    Different objects at different distances are seen by the eye. The parameter that remains constant is

  • Question 2
    4 / -1

    An under-water swimmer cannot see very clearly even in absolutely clear water because of

  • Question 3
    4 / -1

    The nearer point of hypermetropic eye is 40 cm. The lens to be used for its correction should have the power?

  • Question 4
    4 / -1

    A microscope is focused on a mark on a piece of paper and then a slab of glass of thickness 3 cm and refractive index 1.5 is placed over the mark. How should the microscope be moved to get the mark in focus again?

  • Question 5
    4 / -1

    A compound microscope consists of an objective lens with focal length 1.0 cm and eye piece of focal length 2.0 cm and a tube length 20 cm the magnification will be

  • Question 6
    4 / -1

    In a compound microscope, the focal lengths of two lenses are 1.5 cm and 6.25 cm. If an object is placed at 2 cm from objective and the final image is formed at 25 cm from eye lens, the distance between the two lenses is

  • Question 7
    4 / -1

    A person with normal near point 25 cm using a compound microscope with objective of focal length 8.0 mm and an eye piece of focal length 2.5 cm can bring an object placed at 9.0 mm from the objective in sharp focus. The separation between two lenses and magnification respectively are

  • Question 8
    4 / -1

    The final image in an astronomical telescope with respect to object is

  • Question 9
    4 / -1

    In an astronomical telescope in normal adjustment, a straight black line of length L is drawn on the objeective lens. The eyepiece forms a real image of this line. The length of this image is l. The magnification of the telescope is

  • Question 10
    4 / -1

    The focal length of the lenses of an astronomical telescope are 50 cm and 5 cm. The length of the telescope when the image is formed at the least distance of distinct vision is

  • Question 11
    4 / -1

    A small telescope has an objective lens of focal length 144 cm and an eye piece of focal length 6.0 cm. What is the separation between the objective and the eye piece?

  • Question 12
    4 / -1

    An astronomical refractive telescope has an objective of focal length 20m and an eyepiece of focal length 2cm.

  • Question 13
    4 / -1

    A giant refracting telescope at an observatory has an objective lens of focal length 15 m. If an eye piece of focal length 1.0 cm is used, what is the angular magnification of the telescope?

  • Question 14
    4 / -1

    A small telescope has an objective lens of focal length 140 cm and an eyepiece of focal length 5.0 cm. The magnifying power of the telescope for viewing distant objects when the final image is formed at the least distance of distinct vision 25 cm will be

  • Question 15
    4 / -1

    A reflecting telescope has a large mirror for its objective with radius of curvature equal to 80 cm. The magnifying power of this telescope if eye piece used has a focal length of 1.6 cm is

Submit Test
Self Studies
User
Question Analysis

  • Answered - 0

  • Unanswered - 15

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
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