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Physical World - Unit and Measurement
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Physical World - Unit and Measurement
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23 Questions

1. P represents radiation pressure - c representsspeed of light and S represents radiation energy strikingunit area per secThe non zero integers x - y - z such thatPx Sy c z is dimensionless are [1992]
2. The dimensions of universal gravitational constantare [1992 - 2004]
3. The dimensional formula of torque is [1989]
4. The frequency of vibration f of a mass m suspendedfrom a spring of spring constant k is given by a relationof the type f = c m x ky - where c is a dimensionlessconstantThe values of x and y are [1990]
5. If the dimensions of a physical quantity are givenby Ma L b Tc - then the physical quantity will be:
6. If C and R denote capacitance and resistance - thedimensional formula of CR is [1988]
7. The dimensional formula for permeability µ isgiven by [1991]
8. The dimensional formula of torque is [1989]
9. In a vernier calliper N divisions of vernier scalecoincides with (N-“ 1) divisions of main scale (in whichlength of one division is 1 mm)The least count of theinstrument should be [1994]
10. The density of a cube is measured by measuring itsmass and length of its sidesIf the maximum error in themeasurement of mass and length are 4% and 3%respectively - the maximum error in the measurement ofdensity will be [1996]
11. Which one of the following groups have quantitiesthat do not have the same dimensions? [2000]
12. The dimensional formula for permeability µ isgiven by [1991]
13. P represents radiation pressure - c representsspeed of light and S represents radiation energy strikingunit area per secThe non zero integers x - y - z such thatPx Sy c z is dimensionless are [1992]
14. If C and R denote capacitance and resistance - thedimensional formula of CR is [1988]
15. Of the following quantities - which one hasdimension different from the remaining three? [1989]
16. If the dimensions of a physical quantity are givenby Ma L b Tc - then the physical quantity will be:
17. The force Fon a sphere of radius a moving in amedium with velocity v is given by F= 6SKavThedimensions of Kare [1997]
18. Dimensional formula of self inductance is [1989]]
19. The force Fon a sphere of radius a moving in amedium with velocity v is given by F= 6SKavThedimensions of Kare [1997]
20. The dimensional formula of pressure is [1990]
21. The frequency of vibration f of a mass m suspendedfrom a spring of spring constant k is given by a relationof the type f = c m x ky - where c is a dimensionlessconstantThe values of x and y are [1990]
22. The dimensions of universal gravitational constantare [1992 - 2004]
23. The density of a cube is measured by measuring itsmass and length of its sidesIf the maximum error in themeasurement of mass and length are 4% and 3%respectively - the maximum error in the measurement ofdensity will be [1996]

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