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,MHT-CET TRIUMPHPHYSICS
HINTS TO MULTIPLE CHOICE QUESTIONS
&
EVALUATION TESTS
, CONTENT
Textbook
Sr. No. Chapter Chapter Name Page No.
No.
Std. XI
1 1 Measurements 1
2 2 Scalars and Vectors 12
3 4 Force 26
4 5 Friction in Solids and Liquids 51
5 8 Refraction of Light 68
6 9 Ray Optics 84
7 12 Magnetic Effect of Electric Current 99
8 13 Magnetism 113
Std. XII
9 1 Circular Motion 121
10 2 Gravitation 142
11 3 Rotational Motion 163
12 4 Oscillations 187
13 5 Elasticity 217
14 6 Surface Tension 232
15 7 Wave Motion 244
16 8 Stationary Waves 260
17 9 Kinetic Theory of Gases and Radiation 280
18 10 Wave Theory of Light 309
19 11 Interference and Diffraction 318
20 12 Electrostatics 337
21 13 Current Electricity 366
22 14 Magnetic Effect of Electric Current 385
23 15 Magnetism 404
24 16 Electromagnetic Induction 410
25 17 Electrons and Photons 434
26 18 Atoms, Molecules and Nuclei 445
27 19 Semiconductors 470
28 20 Communication Systems 481
, Textbook
Chapter No.
01 Measurements
Hints
10. Parallactic angle, = 57
Classical Thinking o
57 57
= = rad
13. Temperature is a fundamental quantity. 60 60 180
b = Radius of earth = 6.4 106 m
26. 1 dyne = 105 N, 1 cm2 = 104 m2 Distance of the moon from the earth,
103 dyne/cm2 = 103 105/104 N/m2 b 6.4 106 60 180
= 102 N/m2 s= = s = 3.86 108 m
57
OR
Using quick conversion for pressure, 11. Distance of sun from earth, s = 1.5 1011 m
1 dyne/cm2 = 0.1 N/m2 Angular diameter of sun,
103 dyne/cm2 = 103 0.1 = 102 N/m2 1920 1920
= 1920 = = rad
60 60 3600 180
d Diameter of sun, D = s
57. Percentage error = 100 %
d 1920
= 1.5 1011
0.01 3600 180
= 100 %
1.03 D 1.4 109 m
= 0.97% 12. Torque = [M1L2T2],
Angular momentum = [M1L2T1]
Critical Thinking So mass and length have the same dimensions.
1. Physical quantity (M) 13. According to Poiseuille’s formula,
= Numerical value (n) Unit (u) πPr 4
=
If physical quantity remains constant then 8l (dV / dt)
n 1/u n1u1 = n2u2. [M1L-1T-2 ][L4 ]
[] = 1 3 1
= [M1L1T1]
2. Because in S.I. system, there are seven [L ][L / T ]
fundamental quantities.
15. [Dipole moment] = [M0L1T1A1]
mass pressure m (F / A) F V [Electric flux] = [M1L3T3A1]
3. = =
density (m / V) A [Electric field] = [M1L1T3A1]
F (A s) 1 2
= = F s = work 16. Li = energy stored in an inductor
A 2
= [M1L2T2]
m
6. mv = kg
sec 17. The dimension of a quantity is independent of
changes in its magnitude.
7. Curie = disintegration/second
1
21. = c = velocity of light
8. Bxt is unitless. 00
Unit of B is m1s1.
mg M1 L1T 2
F L dyne 10 N -5
23. = 1 1 1 = [L1T1]
9. Y= . = = = 0.1 N/m2 r L M T L1
A DL cm 2 10-4 m 2
1
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