UPPSC RO/ARO SAMARTH SCIENCE (WORK & ENERGY) QUIZ

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Question 1:

If a bulb of $50 \mathrm{~W}$ consumes energy of $1000 \mathrm{~J}$, then the time taken by the bulb is?

Question 2:

An electric washing machine of $750 \mathrm{~W}$ is used for 4 hours a day. The energy consumed by the machine in a day will be

Question 3:

The commercial unit of electrical energy is ………

Question 4:

A mobile was dropped from a balcony if the mass of the mobile phone is 0.5kg and the mobile phone was dropped from a height of 100m,g=10m / s2. So what is the potential energy of mobile phone?

Question 5:

If the velocity of an object becomes twice its initial velocity, by how many times will its Kinetic energy increase?

Question 6:

The source of energy of the Sun is-

Question 7:

A falling coconut contains-

Question 8:

The work done by friction is not dissipated but it is converted into energy in the form of ………….

Question 9:

Fill in the blanks with the correct options.

An object is thrown vertically upwards.

During its rise, potential energy ________ and kinetic energy. ______

Question 10:

The work done is zero if there is no ________?