Answer:
The paper is placed on the focus of the lens then we get the sharp image.
Explanation:
Given that,
Object distance = 150000000 km
Diameter = 1400000 km
Diameter of lens = 5.2 cm
Focal length = 10 cm
We need to calculate the image distance
Using formula of lens
Here,
Hence, The paper is placed on the focus of the lens then we get the sharp image.
Answer:
0.98°
Explanation:
The Sun appears to move across various constellation because of the Earth's revolution around it. This apparent motion is essentially same as the actual motion of the Earth. The orbit of Earth around the Sun is almost circular.
Time taken to complete one revolution = 365 days
Degrees traveled in 365 Days = 360°
The motion per day is
= 0.98° per day