MCQ
Large aperture of telescope are used for
- ALarge image
- ✓Greater resolution
- CReducing lens aberration
- DEase of manufacture
✓
Answer
Correct option: B.
Greater resolution
Resolving power $\propto$ Aperture
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Natural length of a spring is $60 \mathrm{~cm}$, and its spring constant is 4000 $\mathrm{N} / \mathrm{m}$. A mass of $20 \mathrm{~kg}$ is hung from it. The extension produced in the spring is, (Take $g=9.8 \mathrm{~m} / \mathrm{s}^2$ )
→On stretching a wire, the elastic energy stored per unit volume is
The earth $E$ moves in an elliptical orbit with the sun $S$ at one of the foci as shown in figure. Its speed of motion will be maximum at the point
→
Which of the following statement is wrong
A machine gun is mounted on a $2000 kg$ car on a horizontal frictionless surface. At some instant the gun fires bullets of mass 10 $g m$ with a velocity of $500 m / sec$ with respect to the car. The number of bullets fired per second is ten. The average thrust on the system is
→The dimensions of surface tension are
Thermopile is used for
A second's pendulum is placed in a space laboratory orbiting around the earth at a height $3 R$, where $R$ is the radius of the earth. The time period of the pendulum is
→The mutual characteristic of triode is
lmage formed on retina of eye is proportional to