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Terms and Conditions

Q.No.1

What is the SI unit of force?

a. J b. W c. N d. Pa

Q.No.2

In which condition are the velocities of two bodies added to get their relative velocity?

a. When two bodies move in the same direction with the same velocity. b. When two bodies move in the same direction with a different velocity. c. When two bodies move in opposite directions with different velocities only. d. When two bodies move in opposite directions with the same or different velocities.

Q.No.3

Due to which reason is the value of MA always less than VR?

a. Effort decreases due to friction. b. Load increases due to friction. c. A part of effort changes into friction. d. A part of effort changes into heat.

Q.No.4

Which formula is used to calculate the velocity ratio of a lever?

a. VR = Ld/Ed b. VR = Ed * Ld c. VR = Ed/Ld d. E/Ed = L/Ld

Q.No.5

How does a third class lever make our work easy to do?

a. by magnifying force b. by gaining speed c. by changing the direction of force d. both A and B

Q.No.6

On which principle is a physical balance based?

a. E * Ld = Ed * L b. E * Ed = L * Ld c. Ed * Ld = E * L d. MA * E = MA * L

Q.No.7

In which type of lever, is work made easy only by accelerating the rate of work?

a. Third class lever b. Second class lever c. First class lever having Ed = Ld d. First class lever having Ld > Ed

Q.No.8

Which statement is true about liquid pressure?

a. Pressure is directly proportional to the density of liquid. b. Pressure is inversely proportional to density of liquid. c. Pressure is inversely proportional to the depth of liquid. d. Pressure is directly proportional to the height of liquid.

Q.No.9

Which is the unit of pressure?

a. Pascal b. Newton c. mm of Hg d. Joule

Q.No.10

For what purpose is the foundation of a building made wider than its wall?

a. To increase pressure on the wall. b. To decrease pressue on the wall. c. To resist pressure of the wall. d. For both B and C

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