Q.1
If velocity of light is C, gravitational acceleration g and pressure P taken as fundamental unit then gravitational constant is ... .... [ Guj T.B. ]
ch-1_que_no-181_img_no1.png
  • a) C0gP-3
  • b) C2g3p-2
  • c) C0g2P-1
  • d) C2g2P-3
Q.2
A ground has length (100 ± 5) m and breadth (50 ± 4) m, then area of ground is ...m2 .... ... [ Guj T.B.]
  • a)(5000 ± 650)
  • b) ( 500 ± 65 )
  • c) (5000 ± 600 )
  • d) (500 ± 650)
Q.3
To make mixed metal, the mass of gold is 1.45g, silver is 2.613 g, copper is 2.8 g and zinc is 1.79g. the mass of mixed metal is ... in terms of significant figure ... ... [ Guj T.B.]
  • a) 8.5
  • b) 8.6
  • c) 8.7
  • d) 8.9
Q.4
1 radian = ... ..
  • a)
  • b)
  • c)
  • d)
Q.5
Rounding off 9637 up to two digit, we get
  • a) 9600
    ch-1_qn-185choice_img_no1.png
  • b) 9630
    ch-1_qn-185choice_img_no2.png
  • c) 9640
    ch-1_qn-185choice_img_no3.png
  • d) 9700
    ch-1_qn-185choice_img_no4.png
Q.6
Number of significant figure in 0.00230 is ....
  • a) 5
  • b) 3
  • c) 4
  • d) None
Q.7
A sphere has radius r with area A = 4πr2 then waht will be the equation of relative error ΔA/A ?
  • a)
  • b)
  • c)
  • d)
Q.8
What is the weight of particle having mass 100 grams?
  • a) 9.8 N
    ch-1_qn-188choice_img_no1.png
  • b) 9.8 × 104N
    ch-1_qn-188choice_img_no2.png
  • c) 9.8 ×104 dyne
    ch-1_qn-188choice_img_no3.png
  • d) 980 dyne
    ch-1_qn-188choice_img_no4.png
Q.9
If the force F is represented by equation F = Pt-1 + Qt then unit of P is same as that of .... (t=time)
  • a) acceleration
  • b) velocity
  • c) displacement
  • d) momentum
Q.10
Dimensional formula for angular velocity is ... ...
  • a) M0L0T1
  • b) M0L1T-1
  • c) M0L0T-1
  • d) M0L0T-2
Q.11
In series connection of resistance Rs = R1+R2 then what is the equation of relative error ....
  • a)
  • b)
  • c)
  • d)
Q.12
For resistance R = V/I, V = 100 ± 5 volts and I = 10 ±0.02 ampere, then calculate percentage error in resistance R
  • a) 5%
    ch-1_qn-199choice_img_no1.png
  • b) 7%
    ch-1_qn-199choice_img_no2.png
  • c) 5.2%
    ch-1_qn-199choice_img_no3.png
  • d) 2.5%
    ch-1_qn-199choice_img_no4.png
Q.13
The percentage error in 125.0±0.5cm is ....
  • a) 4%
  • b) 0.04%
  • c) 0.4%
  • d) 40%
Q.14
Equation of displacement is x = at + bt2 where x is distnce in kilometer and time t in seconds then unot of b is
  • a) km/s
  • b) km-s
  • d) km -s2
  • c) km/s²
Q.15
'a' is the acceleration of an object in equation x = Kamtn where t is time, then calculate the value of m and n.
  • a) m = 1, n = 1
  • b) m = 1, n = 2
  • c) m = 2, n = 1
  • d) m =2, n = 2
Q.16
For parallel connection of resistors equivalent resistance is given by following equation then which of the following equation is true
  • a)
  • b)
  • c)
  • d)
Q.17
Percentgae error in mass and length are 0.26% nad 0.38% respectively then what is the percentage error in density? [ guj T.B.]
ch-1_que_no-204_img_no1.png
  • a) 14%
    ch-1_qn-204choice_img_no1.png
  • b) 1.4%
    ch-1_qn-204choice_img_no2.png
  • c) 1.04%
    ch-1_qn-204choice_img_no3.png
  • d) 1.44%
    ch-1_qn-204choice_img_no4.png
Q.18
S = A(1 -e-Bxt), where S = speed, x = displacement t = times then unit of B is ...
  • a) m-1 s-1
  • b) m-2 s
  • c) s-2
  • d) s-1
Q.19
Match the following
1) joule a) henry ×ampere/sec
2) watt b) farady ×volt
3) volt c) cooumb × volt
4) coloumb d) orestad × cm
- - e) ampere × gauss
- - f) (ampere)2 × ohm
  • a) 1 -a, 2 -f, 3 -e, 4 -d
  • b) 1 -c, 2 -f, 3 -a, 4 -e
  • c) 1 -c, 2 -f, 3 -a, 4 -b
  • d) 1 -b, 2 -f, 3 -a, 4 -c
Q.20
Match the following ...
I II
a) distance between earth and star 1) Micron
b) inter molecular distance in solids 2) Angstrom
c) dimensions of molecule 3) light year
d) wave length of infrared rays 4) fermi
- - 5) kilometer
  • a) a -5, b-4, c -2, d -1
  • b) a -3, b -2, c -4, d -1
  • c) a -5, b -2, c -4, d -3
  • d) a -3, b-4, c -1, d -2
Q.21
Match the following
a) angular momentum 1) M1L2T-2
b) latent heat 2) M1L2Q-2
c) torque 3) M1L2T-1
d) tcapacitance 4) M1L3T-1Q-2
e) inductance 5) M-1L-2T2Q2
f) resistance 6) M0L2T-2
  • a) a -3, b -6, c -1, d -5, e -2, f -4
  • b) a -3, b -6, c -5, d -2, e -4, f -1
  • c) a -3, b -5, c -2, d -4, e -21, f -6
  • d) a -6, b -5, c -2, d -4, e -1, f -3
Q.22
Assertion: Method of dimensions cannot be used for deriving formula containing trigonometric ratios Reason: This is because trigonometric ratios have no dimensions
  • a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
  • b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
  • c) Assertion is true but, Reason is false
  • d) Assertion is false but, Reason is true
Q.23
Assertion: In the following , m is linear mass density Reason" Linear mass density = mass/ volume
  • a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
  • b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
  • c) Assertion is true but, Reason is false
  • d) Assertion is false but, Reason is true
Q.24
Assertion: The quantity is dimensionally equal to velocity and numerically equal to velocity of light Reason: µ0 is permeability of vacuum and ε0 is the permittivity of vacuum
ch-1_que_no-212_img_no1.png
  • a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
  • b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
  • c) Assertion is true but, Reason is false
  • d) Assertion is false but, Reason is true
Q.25
Assertion:In any mathematical relation between physical quantities the dimensions on both sides must be the same. Reason: The dimensions of a Physical quantities are the power raised on fundamental quantities to obtained derived physical quantity
ch-1_que_no-213_img_no1.png
  • a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
  • b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
  • c) Assertion is true but, Reason is false
  • d) Assertion is false but, Reason is true
Q.26
Assertion: Surface energy stands for energy and not for energy per unit area Reason: Dimensions of surface energy are M-1L0T-2
  • a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
  • b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
  • c) Assertion is true but, Reason is false
  • d) Assertion is false but, Reason is true
Q.27
The observations of the oscillations of a simple pendulum are 2.63s, 2.56s, 2.42s, 2.71s and 2.80s. Clculate average absolute error
  • a) 0.1 s
  • b) 0.11s
  • c) 0.01 s
  • d) 1.0s
Q.28
Assertion: Parallex method cannot be used for measuring distance of stars more than 100light years away Reason: Because parallel angle reduces so much that it cannot be measured accurately
  • a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
  • b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
  • c) Assertion is true but, Reason is false
  • d) Assertion is false but, Reason is true
Q.29
The surface area and volume of cube is same then volume is ... ...
  • a) 216 unit
  • b) 1000 unit
  • c) 2000 unit
  • d) 3000 unit
Q.30
From two different unit systems, measurement of one physical quantity are n1 and n2 and their units are u1 and u2 respectively. Find the relation between them?
  • a) n1u1 = n2u2
  • b) n1u1 = n2u2 =0
  • c) n1u2 = n2u1
  • d) n₁+u₁ = n₂ +u₂
0 h : 0 m : 1 s