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ICSE Class X Board Exam 2024 : Physics | |
To calculate power, use the formula \( \text{Power} = \frac{\text{Work}}{\text{Time}} \). For Sumit: \( \text{Power}_{\text{Sumit}} = \frac{600 \text{ J}}{10 \text{ min} \times 60 \text{ s/min}} = \frac{600}{600} = 1 \text{ W} \). For Amit: \( \text{Power}_{\text{Amit}} = \frac{300 \text{ J}}{20 \text{ min} \times 60 \text{ s/min}} = \frac{300}{1200} = 0.25 \text{ W} \). The ratio of the powers: \( \text{Ratio of powers} = \frac{\text{Power}_{\text{Sumit}}}{\text{Power}_{\text{Amit}}} = \frac{1 \text{ W}}{0.25 \text{ W}} = 4 \). The ratio of the powers delivered by them is 4:1. jay2 |
ICSE Class X Board Exam 2024 : Physics | |
(b) More pulleys in the upper fixed block increase the mechanical advantage of the system, making it easier to lift heavier loads by distributing the weight across multiple pulleys. sunita |
ICSE Class X Board Exam 2024 : Physics | |
(a) A block and tackle system with '9' pulleys provides a mechanical advantage that allows Meera to lift heavier loads with less effort, compared to a single movable pulley which provides limited mechanical advantage. yuvi747 |
ICSE Class X Board Exam 2024 : Physics | |
centripetal When a stone tied to a string is rotated in a horizontal plane, the tension in the string provides the centripetal force necessary for circular motion. aryan |
ICSE Class X Board Exam 2024 : Physics | |
Class II lever A bottle opener is an example of a Class II lever as the load is positioned between the effort and the fulcrum. neil |
ICSE Class X Board Exam 2024 : Physics | |
a) Move away from the slab A block of glass will cause the light to refract and the focal point to move away from the slab. bobby31 |
ICSE Class X Board Exam 2024 : Physics | |
a) m < 1 For a concave lens, the image formed is always diminished, resulting in a magnification less than 1. james |
ICSE Class X Board Exam 2024 : Physics | |
a) terminal voltage The potential difference in a closed circuit, taking into account any internal resistance. sara |
ICSE Class X Board Exam 2024 : Physics | |
c) forced vibrations When the stem is pressed, the tabletop is forced to vibrate at the frequency of the tuning fork. kam510 |
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