Two bulbs of 60 watts and 100 watts are connected in series and this combination is connected across the mains. Which bulb will glow more brightly? Give reasons.
What are the factors on which the resistance of a conductor depends?
Write an essay of about 120 words about the most exciting event in your life.
Describe the event, where did it take place, who was involved, how it affected you/your friends, how do you remember it.
What are the types of transpiration? Explain the factor affecting the rate of transpiration.
Can two independent sources of light produce interference?
What is Doppler's effect? Derive an expression for the apparent frequency received by a stationary observer when a source of sound is moving away from the observer.
Why is the roaring of a lion different than the sound of a mosquito?
A man standing at one of a closed corridor 57 m long below a short blast on a whistle. He found that the time from the blast to the sixth echo was 2 seconds. If the temperature was 17°C, what was the velocity of sound at 0°C?
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