BITSAT SERIES Physics
Optical Instruments
3 previous year questions.
Volume: 3 Ques
Yield: Medium
High-Yield Trend
1
2017 2
2014 Chapter Questions 3 MCQs
01
PYQ 2014
medium
physics ID: bitsat-2
The magnifying power of a telescope is
9. When it is adjusted for parallel rays, the distance between the objective and the eye piece is found to be 20 cm. The focal length of lenses are:
1
2
3
4
02
PYQ 2014
medium
physics ID: bitsat-2
Resolving power of a telescope will be more, if the diameter of the objective is:
1
larger
2
smaller
3
it does not depend on diameter
4
None of these
03
PYQ 2017
medium
physics ID: bitsat-2
A telescope has an objective lens of 10 cm diameter and is situated at a distance of one kilometer from two objects. The minimum distance between these two objects which can be resolved by the telescope, when the wavelength of light is 5000AA, is of the order of
1
5 cm
2
0.5 m
3
5 mm
4
5 m