In the relation y=acos(ωt−kx), the dimensional formula for k is 

(1) [M0L−1T−1]

(2) [M0LT−1]

(3) [M0L−1T0]

(4) [M0LT]

y=acos(ωt−kx) संबंध में, k के लिए विमीय सूत्र है-

(1) [M0L−1T−1]

(2) [M0LT−1]

(3) [M0L−1T0]

(4) [M0LT]

 55%
Level 3: 35%-60%

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How many wavelength of Kr86 are there in one metre

(1) 1553164.13

(2) 1650763.73

(3) 652189.63

(4) 2348123.73

एक मीटर में Kr86 की कितनी तरंगदैर्ध्य हैं?

(1) 1553164.13

(2) 1650763.73

(3) 652189.63

(4) 2348123.73

 55%
Level 3: 35%-60%

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Which of the following represents the dimensions of Farad 

(1) M−1L−2T4A2

(2) ML2T2A−2

(3) ML2T2A−1

(4) MT−2A−1

निम्नलिखित में से कौन फैरड की विमा को निरूपित करता है- 

(1) M−1L−2T4A2

(2) ML2T2A−2

(3) ML2T2A−1

(4) MT−2A−1

Level 3: 35%-60%

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The unit of L/R is (where L = inductance and R = resistance)

(1) sec

(2) sec–1

(3) Volt

(4) Ampere

L/R का मात्रक है- (जहाँ L= प्रेरकत्व और R= प्रतिरोध)

(1) सेकेंड

(2) सेकेंड–1

(3) वोल्ट

(4) एम्पियर

Level 4: Below 35%

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If the constant of gravitation (G), Planck's constant (h) and the velocity of light (c) be chosen as fundamental units. The dimension of the radius of gyration is 

(1) h1/2c−3/2G1/2

(2) h1/2c3/2G1/2

(3) h1/2c−3/2G−1/2

(4) h−1/2c−3/2G1/2

यदि गुरुत्वाकर्षण नियतांक (G), प्लांक नियतांक (h) और प्रकाश का वेग (c) को मूल मात्रकों के रूप में चयनित किया गया है। परिभ्रमण त्रिज्या की विमा है:

(1) h1/2c−3/2G1/2

(2) h1/2c3/2G1/2

(3) h1/2c−3/2G−1/2

(4) h−1/2c−3/2G1/2

Level 3: 35%-60%

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Error in the measurement of radius of a sphere is 1%. The error in the calculated value of its volume is 

(1) 1%

(2) 3%

(3) 5%

(4) 7%

एक गोलक की त्रिज्या के मापन में 1% की त्रुटि है। इसके आयतन के मान की गणना में कितनी त्रुटि है?

(1) 1%

(2) 3%

(3) 5%

(4) 7%

 60%
Level 2: 60%+

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A physical parameter a can be determined by measuring the parameters b, c, d and e using the relation a = bαcβ/dγeδ. If the maximum errors in the measurement of b, c, d and e are b1%, c1%, d1% and e1%, then the maximum error in the value of a determined by the experiment is

(1) (b1 + c1 + d1 + e1)%

(2) (b1  + c1 − d1 − e1)%

(3) (αb1 + βc1 − γd1 −δe1)%

(4) (αb1+ βc1 + γd1 + δe1)%

एक भौतिक प्राचल a संबंध a = bαcβ/dγeδ का उपयोग करके प्राचलों b, c, d और e के मापन के द्वारा निर्धारित किया जा सकता हैं। यदि b, c, d और e के मापन में अधिकतम त्रुटियां क्रमशः b1%, c1%, d1% और e1% है, तब प्रयोग द्वारा निर्धारित a के मान में अधिकतम त्रुटि कितनी है?

(1) (b1 + c1 + d1 + e1)%

(2) (b1  + c1 − d1 − e1)%

(3) (αb1 + βc1 − γd1 −δe1)%

(4) (αb1+ βc1 + γd1 + δe1)%

Level 3: 35%-60%

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Frequency is the function of density (ρ), length (a) and surface tension (T). Then its value is 

(1) Tkρ1/2a3/2

(2) kρ3/2a3/2/T

(3) T3/2kρ1/2a3/2

(4) T3/2kρ1/2a1/2

आवृत्ति, घनत्व (ρ), लंबाई (a) और पृष्ठ तनाव (T) का फलन है। तब इसका मान है:

(1) Tkρ1/2a3/2

(2) kρ3/2a3/2/T

(3) T3/2kρ1/2a3/2

(4) T3/2kρ1/2a1/2

Level 4: Below 35%

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Dimension of electric current is 

(1) [M0L0T−1Q]

(2) [ML2T−1Q]

(3) [M2LT−1Q]

(4) [M2L2T−1Q]

 विद्युत धारा की विमा है-

(1) [M0L0T−1Q]

(2) [ML2T−1Q]

(3) [M2LT−1Q]

(4) [M2L2T−1Q]

Level 3: 35%-60%

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If pressure P, velocity V and time T are taken as fundamental physical quantities, the dimensional formula of force is  

(1) PV2T2

(2) P−1V2T−2

(3) PVT2

(4) P−1VT2

यदि दाब P, वेग V और समय T को मूल भौतिक राशियों के रूप में लिया जाता है, बल का विमीय सूत्र है- 

(1) PV2T2

(2) P−1V2T−2

(3) PVT2

(4) P−1VT2

Level 3: 35%-60%

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