wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The diameter of the moon is 33.5×103 km and its distance from earth is 53.8×105 km. The focal lengths of the objective lens and eye piece of a telescope are 400cm and 10cm respectively. When viewed through the telescope, the diameter of the image of moon will appear as:

A
2 cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
2.5 cm
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
3 cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
5 cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 2.5 cm
The diameter (d) of the moon appear when viewed through the telescope is:
d=D.fS=33.5×103×453.8×105=2.5cm

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Playing with Glass Slabs
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon