Assertion : Units of Rydberg constant R are m-1

Reason : It follows from Bohr’s formula v¯=R1n121n22, where the symbols have their usual meaning.

अभिकथन: रिडबर्ग नियतांक R का मात्रक m-1 है 

कारण: यह बोहर के सूत्र v¯=R1n121n22  अनुसरण करता है, जहाँ प्रतीकों का अपना सामान्य अर्थ है।

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false

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The dimensions of shear modulus are

(1) MLT–1

(2) ML2T2

(3) ML1T2

(4) MLT2

अपरूपण गुणांक की विमा है-

(1) MLT–1

(2) ML2T2

(3) ML1T2

(4) MLT2

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The dimension of RL are

(1) T2

(2) T

(3) T–1

(4) T–2

RL की विमा है- 

(1) T2

(2) T

(3) T–1

(4) T–2

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The dimensional formula of angular velocity is

(1) M0L0T1

(2) MLT1

(3) M0L0T1

(4) ML0T2

कोणीय वेग का विमीय सूत्र है-

(1) M0L0T1

(2) MLT1

(3) M0L0T1

(4) ML0T2

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Dimensions of magnetic field intensity is 

(1) [M0L1T0A1]

(2) [MLT1A1]

(3) [ML0T2A1]

(4) [MLT2A]

चुंबकीय क्षेत्र की तीव्रता की विमा है-

(1) [M0L1T0A1]

(2) [MLT1A1]

(3) [ML0T2A1]

(4) [MLT2A]

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If the unit of length and force be increased four times, then the unit of energy is 

(1) Increased 4 times

(2) Increased 8 times

(3) Increased 16 times

(4) Decreased 16 times

यदि लंबाई और बल की इकाई को चार गुना बढ़ाया जाए, तो ऊर्जा की इकाई है-

(1) 4 गुना बढ़ी हुई

(2) 8 गुना बढ़ी हुई

(3) 16 गुना बढ़ी हुई

(4) 16 गुना घटी हुई

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Which of the following is not a unit of energy 

(1) W​-s

(2) kg-m/sec

(3) N​-m

(4) Joule

निम्नलिखित में से कौन ऊर्जा का मात्रक नहीं है?

(1) W​-s

(2) kg-m/s

(3) N​-m

(4) जूल

 53%
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If x=at+bt2, where x is the distance travelled by the body in kilometres while t is the time in seconds, then the units of b are

(1) km/s

(2) kms

(3) km/s2

(4) kms2

यदि x=at+bt2, जहाँ x पिंड द्वारा किलोमीटर में तय की गई दूरी है, जबकि t सेकेंड में समय है, तब का मात्रक है-

(1) km/s

(2) kms

(3) km/s2

(4) kms2

 50%
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The dimensional formula of relative density is 

(1) ML–3

(2) LT–1

(3) MLT–2

(4) Dimensionless

आपेक्षिक घनत्व का विमीय सूत्र है-

(1) ML–3

(2) LT–1

(3) MLT–2

(4) विमाहीन

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Unit of magnetic moment is

(1) Amperemetre2

(2) Amperemetre

(3) Webermetre2

(4) Weber​​/metre

चुंबकीय आघूर्ण का मात्रक है-

(1)  एम्पियर  मीटर 2

(2)  एम्पियर ​ मीटर

(3)  वेबर  मीटर 2

(4) वेबर/मीटर

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