Work, Energy and Power Test

Result

Work, Energy and Power Test - 61

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

Assertion Comets move around the sun in elliptical orbits. The gravitational force on the comet due to sun is not normal to the comet’s velocity but the work done by the gravitational force over every complete orbit of the comet is zero.
Reason Gravitational force is a non conservative force.

A
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

B
If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

C
If Assertion is true but Reason is false.

D
If the Assertion and Reason both are false

E
If Assertion is false but Reason is true.
Question 2
4 / -1

Assertion The rate of change of total momentum of a many particle system is proportional to the sum of the internal forces of the system.
Reason Internal forces can change the kinetic energy but not the momentum of the system.

A
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

B
If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

C
If Assertion is true but Reason is false.

D
If the Assertion and Reason both are false

E
If Assertion is false but Reason is true.
Question 3
4 / -1

Assertion Work done in moving a body over a closed loop is zero for every force in nature.
Reason Work done does not depend on nature of force.

A
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

B
If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

C
If Assertion is true but Reason is false.

D
If the Assertion and Reason both are false

E
If Assertion is false but Reason is true.
Question 4
4 / -1

Assertion Power of machine gun in determined by both, the number of bullet fired per second and kinetic energy of bullets.
Reason Power of any machine is defined as work done (by it) per unit time.

A
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

B
If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

C
If Assertion is true but Reason is false.

D
If the Assertion and Reason both are false

E
If Assertion is false but Reason is true.

Solution
Question 5
4 / -1

Assertion According to law of conservation of mechanical energy change in potential energy is equal and opposite to the change in kinetic energy.
Reason Mechanical energy is not a conserved quantity.

A
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

B
If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

C
If Assertion is true but Reason is false.

D
If the Assertion and Reason both are false

E
If Assertion is false but Reason is true.

Solution
Question 6
4 / -1

Assertion When the force retards the motion of a body, the work done is zero.
Reason Work done depends on angle between force and displacement.

A
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

B
If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

C
If Assertion is true but Reason is false.

D
If the Assertion and Reason both are false

E
If Assertion is false but Reason is true.
Question 7
4 / -1

Assertion In an elastic collision of two bodies, the momentum and energy of each body is conserved.
Reason If two bodies stick to each other, after colliding, the collision is said to be perfectly elastic.

A
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

B
If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

C
If Assertion is true but Reason is false.

D
If the Assertion and Reason both are false

E
If Assertion is false but Reason is true.
Question 8
4 / -1

Assertion In case of bullet fired from gun, the ratio of kinetic energy of gun and bullet is equal to ratio of mass of bullet and gun.
ReasonIn firing, momentum is conserved.

A
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

B
If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

C
If Assertion is true but Reason is false.

D
If the Assertion and Reason both are false

E
If Assertion is false but Reason is true.

Solution
Question 9
4 / -1

Assertion Power developed in circular motion is always zero.
Reason Work done in case of circular motion is zero.

A
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

B
If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

C
If Assertion is true but Reason is false.

D
If the Assertion and Reason both are false

E
If Assertion is false but Reason is true.
Question 10
4 / -1

Assertion Kinetic energy of a body is quadrupled, when its velocity is doubled.
Reason Kinetic energy is proportional to square of velocity.

A
If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

B
If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

C
If Assertion is true but Reason is false.

D
If the Assertion and Reason both are false

E
If Assertion is false but Reason is true.

Solution

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Work, Energy and Power Test - 61

Result

Work, Energy and Power Test - 61

Score

-

Rank

-

SHARING IS CARING

Question 1

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

If Assertion is true but Reason is false.

If the Assertion and Reason both are false

If Assertion is false but Reason is true.

Question 2

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

If Assertion is true but Reason is false.

If the Assertion and Reason both are false

If Assertion is false but Reason is true.

Question 3

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

If Assertion is true but Reason is false.

If the Assertion and Reason both are false

If Assertion is false but Reason is true.

Question 4

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

If Assertion is true but Reason is false.

If the Assertion and Reason both are false

If Assertion is false but Reason is true.

Solution

Question 5

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

If Assertion is true but Reason is false.

If the Assertion and Reason both are false

If Assertion is false but Reason is true.

Solution

Question 6

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

If Assertion is true but Reason is false.

If the Assertion and Reason both are false

If Assertion is false but Reason is true.

Question 7

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

If Assertion is true but Reason is false.

If the Assertion and Reason both are false

If Assertion is false but Reason is true.

Question 8

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

If Assertion is true but Reason is false.

If the Assertion and Reason both are false

If Assertion is false but Reason is true.

Solution

Question 9

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

If Assertion is true but Reason is false.

If the Assertion and Reason both are false

If Assertion is false but Reason is true.

Question 10

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

If Assertion is true but Reason is false.

If the Assertion and Reason both are false

If Assertion is false but Reason is true.

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday