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Recent questions tagged telegram-49366

(chatquestion)...Two stars A and B radiate maximum energy at wave lengths 4000Å and 5000Å respectivey. The ratio of their temperature will be – (1) 1: 2 2.66 (2) 2:1 (3) 4 :5 (4) 5: 4 Q.67 Wein's displacement law is shown by the following relation 2T=b then the curve drawn between log T and log m wil be - (1)Log Am Log m (2) (3) Log m (4) Log 2m Log T Log T Log T Log T D.68 A continuous flow water heater (geyser) has an electrical power rating=2kW and efficienty of conversion of electrical power into heat 80%. If water is flowing through the device at the rate of 100 cc/sec, and the inlet temperature is 10°C, the outlet temperature will be %3D (1) 12.2°C (2) 13.8°C (3) 20°C (4) 16.5°C

asked Jan 27, 2020 by balaji.thirumalai

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