Physical quantities & work and energy: Mock Test
Work and Energy Quiz
Test your knowledge on physical quantities, work, and energy with this engaging mock test! Perfect for students, teachers, or anyone interested in the laws of physics.
Challenge yourself with questions covering:
- Kinetic and potential energy
- Density and buoyant force
- Power and energy consumption
- Real-life applications of physics concepts
The mass of 10 l of oil is 8kg. Then, the density of oil is ____ (1l = 1000cm3)
800 kg/m3
800 kg/cm3
1600 kg/m3
1600 g/cm3
If the velocity of the body is tripled, the kinetic energy becomes _____________.
Tripled
Quadrupled
6 times
9 times
In which of the following scenarios potential energy is converted into kinetic energy.
Heating water in solar cooker
Water released from a dam falling on turbines
Rahul writing a letter with a pen.
Wind rotating blades of a windmill.
The condition for the body to sink is weight of the body ___ Buoyant force.
Greater than
Lesser than
Equal to
No relation
On an average, a human carries a mobile of mass 100g which is 2m from the ground for 5 hours (g=10m/s). a. The amount of energy spent in this case is _____ J.
On an average, a human carries a mobile of mass 100g which is 2m from the ground for 5 hours (g=10m/s). b. Power used for 10 seconds is _____ W.
By mistake, Rishi locked the room with LED light (60 Watts) and fan (40 Watts) in working. He came back home after 20 hours. Total cost involved is Rs.______ if it is Rs.3/unit.
Ram released a stone of mass 6kg from the second floor of height 5m from the ground. At 3m, potential energy is _______ than kinetic energy
TRUE OR FALSE A man sitting in a crane and moving the load upwards. In this case, work is done by the man.
True
False
From 160ml of milk 80ml is poured into a glass vessel. The density of milk now is reduced to half.
True
False
When energy changes from one form to another, the energy that disappears from one form, reappears in exactly equivalent amounts in the other form.
True
False
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