Home/ Questions/Q 485825
Next
In Process
Prerna Gagrani
Asked: 2022-11-06T07:24:49+05:30 In:

If the focal length of the objective lens is increased then
A. microscope will increase but that of telescope decrease
B. microscope and telescope, both will increase.
C. microscope and telescope both will decrease
D. microscope will decrease, but that of telescope will increase.

If the focal length of the objective lens is increased then
A. microscope will increase but that of telescope decrease
B. microscope and telescope, both will increase.
C. microscope and telescope both will decrease
D. microscope will decrease, but that of telescope will increase.
Parabola
Leave an answer

Leave an answer

Browse

1 Answer

  1. Correct Answer – D
    For microscope, `M = (v_0)/(-u_0) (1 + (d)/(f_e))`
    and for telescope, `M = (f_0)/(f_e)(1 + (f_e)/(d))`
    When we increase `f_e : M` for microscope decreases and `M` for telescope increases.

    • 0
Aarushi Shanker
Asked: 2022-11-02T12:34:36+05:30 In:

If the focal length of the objective lens is increased then
A. microscope will increase but that of electroscope decrease
B. microscope and telescope both will increase
C. microscope and telescope both will decrease
D. microscope will decrease but that of telescope will increase

If the focal length of the objective lens is increased then
A. microscope will increase but that of electroscope decrease
B. microscope and telescope both will increase
C. microscope and telescope both will decrease
D. microscope will decrease but that of telescope will increase
Parabola
Leave an answer

Leave an answer

Browse

1 Answer

  1. Correct Answer – D
    For microscope, `m=(L)/(f_(v))(D)/(f_(e)) Rightarrow m alpha (1)/(f_(v))`
    `”For telescope” m=(f_(v))/(f_(e)), m alpha f_(v)`
    The magnifying power of microscope will decrease but the magnifying power telescopw will increase.

    • 0