ch2

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AGARWAL PHYSICS RAVI AGARWAL (M.S c .)-9913650950/9374727052 CH.2 TIME: 30 MIN. 1_________ is the dimensional formula of Electric intensity. 2 A cube has numerically equal volume and surface area. The volume of such a cube is______________. 3 N/kg is the unit of __________. 4 A laser signal sent toward the Jupiter returns after t seconds. If C is the speed of light, then the distance of the Jupiter from the observer is________________. 5 Suppose we adopt the new unit of length, which equals x metre. The area 1m 2 expressed in terms of the new unit has magnitude___________. 6 The dimension of EMF in terms of Current A is______________. 7 If force, length and time would have been the fundamental units, what would have been the dimensional formula for mass? 8 Unit of specific resistance is______________. 9 The dimensional formula of Calorie is________________. 10 The equation of a wave is given by , where is angular velocity and v is linear velocity. The dimension of K are_________________. 11 A thin copper wire of length l metre increase in length by 2% when heated through 10 . What is the percentage increase in area when a square copper sheet of length l metre is heated through 10 ? 12 The best way to express the product 17.8 3.1143 = 55.4354 is_________. 13 The dimensional formula for Capacitance is____________________. 14 The dimensions of Gravitational constant is ___________________. 15 Parsec is the unit of____________________. 16 The dimension of is ____________. 17 Suppose the torque acting on any body is given by , where =angular speed, L = Angular momentum, I= Moment of Inertia. The dimensional formula for KM is same as that of____________. 18 Dimension of Velocity gradient is __________.

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Transcript of ch2

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AGARWAL PHYSICS RAVI AGARWAL (M.Sc.)-9913650950/9374727052

CH.2 TIME: 30 MIN.

1_________ is the dimensional formula of Electric intensity.

2 A cube has numerically equal volume and surface area. The volume of such a cube is______________.

3 N/kg is the unit of __________.

4 A laser signal sent toward the Jupiter returns after t seconds. If C is the speed of light, then the distance of the Jupiter from the observer is________________.

5 Suppose we adopt the new unit of length, which equals x metre. The area 1m2 expressed in terms of the new unit has magnitude___________.

6 The dimension of EMF in terms of Current A is______________.

7 If force, length and time would have been the fundamental units, what would have been the dimensional formula for mass?

8 Unit of specific resistance is______________.

9 The dimensional formula of Calorie is________________.

10 The equation of a wave is given by , where is angular velocity and v is linear velocity. The dimension of K are_________________.

11 A thin copper wire of length l metre increase in length by 2% when heated through 10 . What is the percentage increase in area when a square copper sheet of length l metre is

heated through 10 ?

12 The best way to express the product 17.8 3.1143 = 55.4354 is_________.

13 The dimensional formula for Capacitance is____________________.

14 The dimensions of Gravitational constant is ___________________.

15 Parsec is the unit of____________________.

16 The dimension of is ____________.

17 Suppose the torque acting on any body is given by , where =angular speed, L = Angular momentum, I= Moment of Inertia. The dimensional formula for KM is same as that of____________.

18 Dimension of Velocity gradient is __________.

19 The mass of a block is 87.2g and its volume is 25 cm3. Its density upto correct significant figures is________________________.

20 If error in measuring diameter of a circle is 4%, the error in radius of the circle is ___________.

WINNERS DON’T DO DIFFERENT THINGS, THEY DO THE THINGS DIFFERENTLY.

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