The dimensional formula for Planck's constant (h) is 

(1) ML2T3

(2) ML2T2

(3) ML2T1

(4) ML2T2

प्लांक नियतांक (h) के लिए विमीय सूत्र है- 

(1) ML2T3

(2) ML2T2

(3) ML2T1

(4) ML2T2

 53%

To unlock all the explanations of this course, you need to be enrolled.

Hints

The dimensions of power are

(1) M1L2T3

(2) M2L1T2

(3) M1L2T1

(4) M1L1T2

शक्ति की विमा है-

(1) M1L2T3

(2) M2L1T2

(3) M1L2T1

(4) M1L1T2

 60%

To unlock all the explanations of this course, you need to be enrolled.

Hints

The equation of state of some gases can be expressed as P+aV2(Vb)=RT. Here P is the pressure, V is the volume, T is the absolute temperature and a, b, R are constants. The dimensions of ‘a’ are 

(1) ML5T2

(2) ML1T2

(3) M0L3T0

(4) M0L6T0

कुछ गैसों की अवस्था के समीकरण को P+aV2(Vb)=RT के रूप में व्यक्त किया जा सकता है। यहाँ दाब है, V आयतन है,परम ताप है और a, b, R नियतांक हैं। ‘a’ की विमा है- 

(1) ML5T2

(2) ML1T2

(3) M0L3T0

(4) M0L6T0

 50%

To unlock all the explanations of this course, you need to be enrolled.

Hints

advertisementadvertisement

The S.I. unit of gravitational potential is

(1) J

(2) J​-​kg1

(3) J​-​kg

(4) J​-​kg2

गुरुत्वीय विभव का S.I मात्रक है-

(1) J

(2) J​-​kg1

(3) J​-​kg

(4) J​-​kg2

 60%

To unlock all the explanations of this course, you need to be enrolled.

Hints

One million electron volt (1MeV) is equal to 

(1) 105eV

(2) 106eV

(3) 104eV

(4) 107eV

एक मिलियन इलेक्ट्रॉन वोल्ट (1MeV) किसके बराबर है?

(1) 105eV

(2) 106eV

(3) 104eV

(4) 107eV

To unlock all the explanations of this course, you need to be enrolled.

Hints

Unit of energy in SI system is 

(1) Erg

(2) Calorie

(3) Joule

(4) Electron volt

SI पद्धति में ऊर्जा का मात्रक है-

(1) अर्ग

(2) कैलोरी

(3) जूल

(4) इलेक्ट्रॉन वोल्ट

 56%

To unlock all the explanations of this course, you need to be enrolled.

Hints

advertisementadvertisement

A suitable unit for gravitational constant is 

(1) kg- msec1

(2) Nm1sec

(3) N  m2kg2

(4) kgmsec1

गुरुत्वाकर्षण नियतांक के लिए एक उपयुक्त मात्रक है-

(1) kg- msec1

(2) Nm1sec

(3) N  m2kg2

(4) kgmsec1

 53%

To unlock all the explanations of this course, you need to be enrolled.

Hints

Planck's constant (h),speed of light in vacuum (c) and Newton's gravitational constant (G) are three fundamental constants. Which of the following combinations of these has the dimensions of lenghth?

(a) hGc3/2

(b) hGc5/2

(c) hcG

(d)Gch3/2

प्लांक नियतांक (h), निर्वात में प्रकाश की चाल (c) और न्यूटन का गुरुत्वाकर्षण नियतांक (G) तीन मूल नियतांक हैं। निम्नलिखित में से किस संयोजन में लंबाई की विमा है?

(a) hGc3/2

(b) hGc5/2

(c) hcG

(d) Gch3/2

To unlock all the explanations of this course, you need to be enrolled.

Hints

SI unit of pressure is

(1) Pascal

(2) Dynes/cm2

(3) cm of Hg

(4) Atmosphere

दाब का SI मात्रक है-

(1) पॉस्कल

(2) डाइन/सेमी2

(3) Hg का सेमी 

(4) वायुमंडल

 54%

To unlock all the explanations of this course, you need to be enrolled.

Hints

advertisementadvertisement

If the dimension of a physical quantity are given by MaLbTc, then the physical quantity will be

(a) pressure if a=1, b=-1, c=-2

(b) velocity if a=1, b=0, c=-1

(c) acceleration if a=1, b=1,c=-2

(d) force if a=0, b=-1, c=-2

यदि एक भौतिक राशि की विमा MaLbTc द्वारा दी जाती है, तो भौतिक राशि होगी-

(a) दाब यदि a = 1, b = -1, c = -2

(b) वेग यदि a = 1, b = 0, c = -1

(c) त्वरण यदि a = 1, b = 1, c = -2

(d) बल यदि a = 0, b = -1, c = -2

 59%

To unlock all the explanations of this course, you need to be enrolled.

Hints