Physics - Study Mode
[#61] A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or touching the bottom of the bucket. The reading of the spring balance
Correct Answer
(A) Will increase
Explanation
Solution: When the piece of iron is lowered into the water, the water level in the bucket increases. And so the pressure at the bottom of bucket also increases. Thus the total thrust at the bottom also increases. Therefore the spring balance reading increases.
[#62] 1 amu is equivalent to
Correct Answer
(D) 931 MeV
Explanation
Solution: 1 amu is equivalent to 931 MeV.
[#63] 1 m/s equals ________ km/hr
Correct Answer
(C) 18/5
Explanation
Solution: 1 m/s equals 18/5 km/hr.
[#64] A light year is a measure of :
Correct Answer
(C) Distance
Explanation
Solution: A light year is a measure of distance.
[#65] One billionth of a second is called
Correct Answer
(D) Nanosecond
Explanation
Solution: A nanosecond (ns) is an SI unit of time equal to one billionth of a second.