CGL 23 21-07-2023 Shift 3


Question 1


Three solid metallic spheres of radii 1 cm, 6 cm and 8 cm, respectively, are melted and recast into a single solid sphere. The radius of the new sphere so formed is:

क्रमशः 1 cm, 6 cm और 8 cm त्रिज्‍या वाले तीन ठोस धातु के गोलों को पिघलाकर एक ठोस गोले में ढाला जाता है। इस प्रकार बने नए गोले की त्रिज्या कितनी होगी?

Options

A

8.5 cm

8.5 cm

B

7.7 cm

7.7 cm

C

5.9 cm

5.9 cm

D

9.0 cm

9.0 cm


Solution:

Correct Answer:

D

9.0 cm

9.0 cm


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