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The earth takes 24 hours to rotate once ...

The earth takes `24` hours to rotate once about its axis. How much time (in min) does the sun take to shift by `1^(@)` when viewed from the earth?

A

2 min

B

4 min

C

6 min

D

8 min

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AI Generated Solution

The correct Answer is:
To solve the problem of how much time the sun takes to shift by 1 degree when viewed from the Earth, we can follow these steps: ### Step 1: Understand the Earth's Rotation The Earth completes one full rotation (360 degrees) in 24 hours. ### Step 2: Convert Hours to Minutes Since we want the time in minutes, we convert 24 hours into minutes: \[ 24 \text{ hours} = 24 \times 60 = 1440 \text{ minutes} \] ### Step 3: Calculate Time for 1 Degree Now, we need to find out how much time it takes for the Earth to rotate by 1 degree. Since the Earth rotates 360 degrees in 1440 minutes, we can set up the following proportion: \[ \text{Time for 1 degree} = \frac{1440 \text{ minutes}}{360 \text{ degrees}} \] ### Step 4: Perform the Division Now, we perform the division: \[ \text{Time for 1 degree} = \frac{1440}{360} = 4 \text{ minutes} \] ### Conclusion Thus, the time taken for the sun to shift by 1 degree when viewed from the Earth is **4 minutes**. ---

To solve the problem of how much time the sun takes to shift by 1 degree when viewed from the Earth, we can follow these steps: ### Step 1: Understand the Earth's Rotation The Earth completes one full rotation (360 degrees) in 24 hours. ### Step 2: Convert Hours to Minutes Since we want the time in minutes, we convert 24 hours into minutes: \[ ...
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NCERT ENGLISH-RAY OPTICS AND OPTICAL INSTRUMENTS-Exercise
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  2. A small candle 2.5 cm in size is placed 27 cm in front of a concave mi...

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  3. A 4.5 cm needle is placed 12 cm away from a convex mirror of focal len...

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  4. A tank is filled with water to a height of 12.5 cm. The apparent depth...

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  5. Fig. (a) and (b) show refraction of an incident ray in air at 60^@ wit...

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  6. A small bulb (assumed to be a point source) is placed at the bottom of...

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  7. A prism is made of glass of unknown refractive index. A parallel beam ...

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  8. A double convex lens is made of glass of refractive index 1.55 with bo...

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  9. A beam of light converges to a point P.A lens is placed in the path of...

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  10. An object of size 3.0 cm is placed 14 cm in front of a concave lens of...

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  11. What is the focal length of a convex lens of focal length 30 cm in con...

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  12. A compound microscope consists of an objects lens of focal length 2.0 ...

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  13. A person with a normal near point (25 cm) using a compound microscope ...

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  14. A small telescope has an objective lens of focal length 144 cm and an ...

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  15. (i) A giant refracting telescope at an observatory has an objective le...

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  16. Use the mirror equation to deduct that : (a) an object between f and...

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  17. A small pin fixed on a table top is viewed from above from a distance ...

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  18. (a) Fig. shows a cross-section of a 'light pipe' made of a glass fibre...

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  19. Answer the following questions : Does the apparent depth of a tank o...

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  20. The image of a small electric bulb fixed on the wall of a room is to b...

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  21. A screen is placed 90 cm from an object. The image of the object on th...

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