The first & second stage of two stage rocket separately weigh 100 kg and 10 kg and contain 800kg and 90kg fuel respectively. If the exhaust velocity of gases is 2 km/sec then velocity of rocket after second stage is (nearly) (log_(10)5=0.6990) (neglect gravity)

The first & second stage of two stage rocket separately weigh 100 kg a

1.	The first & second stage of two stage rocket separately weigh 100 kg and 10 kg and contain 800kg and 90kg fuel respectively. If the exhaust velocity of gases is 2 km/sec then velocity of rocket after second stage is (nearly) (log_(10)5=0.6990) (neglect gravity)
Answer» `7.8 XX 10^(3) m//s` `9.3 xx 10^(3) m//s` `2.4 xx 10^(3) m//s` `6.1 xx 10^(3) m//s` ANSWER :A

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The first & second stage of two stage rocket separately weigh 100 kg and 10 kg and contain 800kg and 90kg fuel respectively. If the exhaust velocity of gases is 2 km/sec then velocity of rocket after second stage is (nearly) (log_(10)5=0.6990) (neglect gravity)

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