Question:
For large magnifying power of a telescope
For large magnifying power of a telescope
Show Hint
For a telescope $M=\frac{f_o}{f_e}$.
Updated On: Oct 1, 2026
- object must be large
- focal length of objective is large
- focal length of eyepiece is large
- focal length of objective and eyepiece must be large
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Formula
Magnifying power of an astronomical telescope in normal adjustment is \(M=\frac{f_o}{f_e}\).
Step 2: Meaning
To make \(M\) large, \(f_o\) must be large and \(f_e\) small. Among the options, only "focal length of objective is large" fits. Option (B).
Final Answer:
A large objective focal length gives a large magnification, option (B). \[ \boxed{\text{(B)}} \]
Magnifying power of an astronomical telescope in normal adjustment is \(M=\frac{f_o}{f_e}\).
Step 2: Meaning
To make \(M\) large, \(f_o\) must be large and \(f_e\) small. Among the options, only "focal length of objective is large" fits. Option (B).
Final Answer:
A large objective focal length gives a large magnification, option (B). \[ \boxed{\text{(B)}} \]
Was this answer helpful?
0
0
Top MHT CET Physics Questions
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- A particle moves along a circle of radius ?$r$? with constant tangential acceleration. If the velocity of the particle is ?$?$? at the end of second revolution, after the revolution has started then the tangential acceleration is
- If $M_z$ = magnetization of a paramagnetic sample, $B$ = external magnetic field, $T$ = absolute temperature, $C$ = curie constant then according to Curie�s law in magnetism, the correct relation is
- In a fundamental mode, the time required for the sound wave to reach upto the closed end of a pipe filled with air is $'t'$ second. The frequency of vibration of air column is
- In a parallel plate capacitor, the capacity increases if
View More Questions
Top MHT CET Optical Instruments Questions
- The magnifying power of a telescope is nine. When it is adjusted for parallel rays, the distance between the objective and eyepiece is $20 \,cm$. The focal length of objective and eyepiece are respectively
- A ray of light passes through a glass slab with refractive index \( n = 1.5 \) at an angle of incidence of \( 30^\circ \). What is the angle of refraction inside the glass? (Use \( \sin 30^\circ = 0.5 \))
- The clarity of the image formed on the retina of the eye depends on the ____
- A concave mirror has a focal length of 20 cm. An object is placed 60 cm in front of the mirror. Find the image distance.
- A simple microscope is used to see the object first in blue light and then in red light. Due to the change from blue to red light, what is the effect on its magnifying power?
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions