Q1.About 5% of the power of a 100 W light bulb is converted to visible radiation. What is the average intensity of visible radiation at a distance of 1m from the bulb and at a distance of 10 m are
Answer : Option AExplaination / Solution: No Explaination.
Q2.Energy releasing enzymatically controlled catabolic process which involves step-wise oxidative breakdown of organic substance inside living cells is called
Answer : Option BExplaination / Solution:
Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products.
Q3.In which year did the scientists report largest ozone hole in the atmosphere?
Answer : Option AExplaination / Solution:
From September 21 to 30, 2006 the average area of the ozone hole was the largest ever observed, at 10.6 million square miles. It is called as Antarctic ozone hole.
1.If an electron moving with a speed of 2.5×107ms−1 is deflected by an electric field of 1.6 k V m−1perpendicular to its circular path, then e/m for the electron will be (given radius of circlar path = 2.3 m)
Answer : Option CExplaination / Solution:
Electric field provide required centripetal force for circular motion