(A) : By increasing the diameter of the objective of telescope, we can increase its range.(R) : The range of a telescope tells us how far away a star of some standard brightness can be spotted by telescope.

A
Both 'A' and 'R' are true and 'R' is the correct explanation of 'A'.
B
Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A
C
'A' is true and 'R' is false
D
Both 'A' and ‘R’ are false

Solution:

The larger the diameter of the objective lens the more light gathering power the telescope will have and even the far stars will produce images of optimum brightness .

(A) : By increasing the diameter of the objective of telescope, we can increase its range.
(R) : The range of a telescope tells us how far away a star of some standard brightness can be spotted by telescope.

Solution:

Related content