Work done by a force is zero when the angle between force and displacement is MCQ with Answer and Explanation
Question
Report Error
Discuss this Question (0)
Practice More Physics Questions
Question #1
Report Error
A pressure cooker reduces cooking time because
Question #2
Report Error
A 60 W bulb is used for 5 hours daily. How much electrical energy is consumed by the bulb in 30 days?
Correct Answer: Option A
Explanation:
Electrical energy (E) = Power (P) × Time (t). Power = 60 W = 0.06 kW. Time per day = 5 hours. Total time in 30 days = 5 × 30 = 150 hours. Energy = 0.06 kW × 150 h = 9 kWh (or 9 units of electricity). One kWh is the commercial unit of energy.
Electrical energy (E) = Power (P) × Time (t). Power = 60 W = 0.06 kW. Time per day = 5 hours. Total time in 30 days = 5 × 30 = 150 hours. Energy = 0.06 kW × 150 h = 9 kWh (or 9 units of electricity). One kWh is the commercial unit of energy.
Question #3
Report Error
The splitting of white light by a prism is due to
No comments yet. Be the first to start the discussion!