Given that v is speed, r is the radius and g is the acceleration due to gravity. Which of the following is dimensionless

(1) v2/rg

(2) v2r/g

(3) v2g/r

(4) v2rg

दिया गया है कि v चाल है, त्रिज्या है और गुरुत्व के कारण त्वरण है। निम्न में से कौन विमाहीन है?

(1) v2/rg

(2) v2r/g

(3) v2g/r

(4) v2rg

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Dimensional formula of velocity of sound is

(1) M0LT2

(2) LT0

(3) M0LT1

(4) M0L1T1

ध्वनि के वेग का विमीय सूत्र है-

(1) M0LT2

(2) LT0

(3) M0LT1

(4) M0L1T1

 58%

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Which of the following is not the unit of energy

(1) Calorie

(2) Joule

(3) Electron volt

(4) Watt

निम्नलिखित में से कौन ऊर्जा का मात्रक नहीं है?

(1) कैलोरी

(2) जूल

(३) इलेक्ट्रॉन वोल्ट

(4) वॉट

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If P represents radiation pressure, c represents speed of light and Q represents radiation energy striking a unit area per second, then non-zero integers x, y and z such that PxQycz is dimensionless, are 

(1) x=1,  y=1,  z=1

(2) x=1,y=1,z=1

(3) x=1,y=1,z=1

(4) x=1,y=1,z=1

यदि विकिरण दाब को निरूपित करता है, प्रकाश की चाल को निरूपित करता है और Q प्रति सेकेण्ड एकांक क्षेत्रफल से टकराने वाली विकिरण ऊर्जा को निरूपित करता है, तब शून्येतर पूर्णांक x, y और इस प्रकार हैं कि PxQycz विमाहीन है- 

(1) x=1,  y=1,  z=1

(2) x=1,y=1,z=1

(3) x=1,y=1,z=1

(4) x=1,y=1,z=1

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Faraday is the unit of

(1) Charge

(2) emf

(3) Mass

(4) Energy

फैरेड किसका मात्रक है?

(1) आवेश

(2) विद्युत वाहक बल 

(3) द्रव्यमान

(4) ऊर्जा

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The dimensional formula for r.m.s. (root mean square) velocity is

(1) M0LT1

(2) M0L0T2

(3) M0L0T1

(4) MLT3

वर्ग माध्य मूल वेग के लिए विमीय सूत्र है-

(1) M0LT1

(2) M0L0T2

(3) M0L0T1

(4) MLT3

 50%

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If L denotes the inductance of an inductor through which a current i is flowing, the dimensions of Li2 are  

(1) ML2T2

(2) Not expressible in MLT

(3) MLT2

(4) LT

यदि एक प्रेरक के प्रेरकत्व को दर्शाता है जिसके माध्यम से एक धारा बह रही है, Li2 की विमा है-  

(1) ML2T2

(2) MLT में व्यक्त नहीं है

(3) MLT2

(4) LT

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Unit of moment of inertia in MKS system 

(1) kg×cm2

(2) kg/cm2

(3) kg×m2

(4) Joule×m

 MKS पद्धति में जड़त्व आघूर्ण का मात्रक है-

(1) kg×cm2

(2) kg/cm2

(3) kg×m2

(4) Joule×m

 53%

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The value of Planck's constant is

(1) 6.63×1034J​-​sec

(2) 6.63×1034J/sec

(3) 6.63×1034kg​-​m2

(4) 6.63×1034kg/sec

प्लांक नियतांक का मान है-

(1) 6.63×1034J​-​sec

(2) 6.63×1034J/sec

(3) 6.63×1034kg​-​m2

(4) 6.63×1034kg/sec

 51%

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Unit of stress is 

(1) N/m

(2) Nm

(3) N/m2

(4) Nm2

प्रतिबल का मात्रक है-

(1) N/m

(2) Nm

(3) N/m2

(4) Nm2

 57%

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