Basic Physics Mcqs - Set 12

1)   An ideal standard of measurement of a base quantity has characteristics_______________?

a. Accessible
b. Invariable
c. Transportable
d. Only a and b are correct
Answer  Explanation 

ANSWER: Only a and b are correct

Explanation:
No explanation is available for this question!


2)   Total uncertainty, in the result obtained from the subtraction of two measurements, is equal to_______________?

a. Sum of their absolute uncertainties
b. The difference of their absolute uncertainties
c. The product of their absolute uncertainties
d. Division of their absolute uncertainties
Answer  Explanation 

ANSWER: Sum of their absolute uncertainties

Explanation:
No explanation is available for this question!


3)   Which one is the highest power multiple ?

a. Giga
b. Beta
c. Mega
d. Deca
Answer  Explanation 

ANSWER: Giga

Explanation:
No explanation is available for this question!


4)   One pico stands for_________________?

a. 10 raised to power -15
b. 10 raised to power -12
c. 10 raised to power -9
d. 10 raised to power -6
Answer  Explanation 

ANSWER: 10 raised to power -12

Explanation:
No explanation is available for this question!


5)   Unit of G is ______________?

a. Nm2Kg2
b. Nm2Kg
c. Nm2Kg-2
d. None
Answer  Explanation 

ANSWER: Nm2Kg

Explanation:
No explanation is available for this question!


6)   The unit of force is _________ and its symbol is ______________ Which is the correct pair ?

a. Newton, n
b. Newton, N
c. newton, n
d. newton, N
Answer  Explanation 

ANSWER: newton, N

Explanation:
No explanation is available for this question!


7)   How many main frontiers of fundamental science ?

a. 1
b. 2
c. 3
d. 4
Answer  Explanation 

ANSWER: 3

Explanation:
No explanation is available for this question!


8)   One light year is equal to________________?

a. 9.5x1015m
b. 9.5x1015sec
c. 9.5x1015Km
d. 9.5x1015cm
Answer  Explanation 

ANSWER: 9.5x1015m

Explanation:
No explanation is available for this question!


9)   Which one is the derived quantity in SI units _____________?

a. Electric current
b. Electric charge
c. Plane angle
d. Amount of substance
Answer  Explanation 

ANSWER: Electric charge

Explanation:
No explanation is available for this question!


10)   Which one is the correct representation of the unit of pressure ?

a. Newton/Meter2
b. newton/meter2
c. Newton/meter2
d. newton/Meter2
Answer  Explanation 

ANSWER: newton/meter2

Explanation:
No explanation is available for this question!


11)   Which one is the dimensionally correct equation ?

a. f=vt
b. S=Vit+1/2at2
c. V=St
d. V=f/t
Answer  Explanation 

ANSWER: S=Vit+1/2at2

Explanation:
No explanation is available for this question!


12)   Zero error of the instrument is a type of_________________?

a. Random error
b. Personal error
c. Systematic error
d. Classified error
Answer  Explanation 

ANSWER: Systematic error

Explanation:
No explanation is available for this question!


13)   In multiplication and division of measurement______________?

a. Percentage uncertainties are added
b. Absolute uncertainties are added
c. Percentage uncertainties are divided
d. Absolute uncertainties are divided
Answer  Explanation 

ANSWER: Percentage uncertainties are added

Explanation:
No explanation is available for this question!


14)   The number of significant figures in 5.400 is________________?

a. 3
b. 5
c. 2
d. None
Answer  Explanation 

ANSWER: None

Explanation:
No explanation is available for this question!


15)   To reduce the uncertainty in the timing experiment______________?

a. Highly precise instrument
b. Conduct at room temperature
c. Count number of vibration
d. Both a and C
Answer  Explanation 

ANSWER: Both a and C

Explanation:
No explanation is available for this question!


16)   The number of significant figures in the length of a bar 6200mm measured by meter rod is_______________?

a. 4
b. 3
c. 2
d. None of these
Answer  Explanation 

ANSWER: 4

Explanation:
No explanation is available for this question!


17)   The number 76.85 is rounded off up to two significant figures as_____________?

a. 76.8
b. 77
c. 76.9
d. None of these
Answer  Explanation 

ANSWER: 77

Explanation:
No explanation is available for this question!


18)   Which of the following is not a correct representation method for prefixes______________?

a. 1mm
b. 10km
c. 1000um
d. Both A and B
Answer  Explanation 

ANSWER: 1000um

Explanation:
No explanation is available for this question!


19)   The rotational K.E of the hoop is equal to the______________?

a. its translational K.E
b. half than its translational K.E
c. double than its translational K.E
d. four times than its translational K.E
Answer  Explanation 

ANSWER: its translational K.E

Explanation:
No explanation is available for this question!


20)   A hoop and disc have same mass and radius. Their rotational K.E are related by an equation______________?

a. K.E hoop = K.E disc
b. K.E hoop = 2K.E disc
c. K.E hoop = 1/2K.E disc
d. K.E hoop = 4K.E disc
Answer  Explanation 

ANSWER: K.E hoop = 2K.E disc

Explanation:
No explanation is available for this question!


21)   The critical speed of an artificial satellite is_______________?

a. 8 Kms-1
b. 8.1 Kms-1
c. 7.9 Kms-1
d. 8 ms-1
Answer  Explanation 

ANSWER: 7.9 Kms-1

Explanation:
No explanation is available for this question!


22)   Geostationary satellite completes one rotation around the earth in_______________?

a. 3 hours
b. 6 hours
c. 12 hours
d. 24 hours
Answer  Explanation 

ANSWER: 24 hours

Explanation:
No explanation is available for this question!


23)   The radius of geostationary orbit from the centre of the earth is nearly______________?

a. 42000km
b. 36000km
c. 24000 km
d. 18000 km
Answer  Explanation 

ANSWER: 42000km

Explanation:
No explanation is available for this question!


24)   According to Einstein, the gravitational interaction is possible between_______________?

a. material objects only
b. material objects and electromagnetic radiation only
c. electromagnetic radiations
d. none of the above
Answer  Explanation 

ANSWER: material objects and electromagnetic radiation only

Explanation:
No explanation is available for this question!


25)   One radian is equal to______________?

a. 67.3°
b. 57.3°
c. 87.3°
d. 60°
Answer  Explanation 

ANSWER: 57.3°

Explanation:
No explanation is available for this question!


26)   The period of a circular motion is given by_______________?

a. T = πv
b. T = πw
c. T = 2πr
d. T = 2πr/v
Answer  Explanation 

ANSWER: T = 2πr/v

Explanation:
No explanation is available for this question!


27)   The direction of the linear velocity of a body moving in a circle is______________?

a. along the axis of rotation
b. along the tangent
c. directed towards the centre
d. directed away from the centre
Answer  Explanation 

ANSWER: along the tangent

Explanation:
No explanation is available for this question!


28)   hen a body moves in a circle, the angle between its linear velocity and angular velocity is always_______________?

a. 180°
b.
c. 90°
d. 45°
Answer  Explanation 

ANSWER: 90°

Explanation:
No explanation is available for this question!


29)   The circumference subtends an angle________________?

a. π radian
b. 2π radian
c. π/2 radian
d. 4π radian
Answer  Explanation 

ANSWER: 2π radian

Explanation:
No explanation is available for this question!


30)   The relation between linear and angular acceleration is______________?

a. a = a x r
b. a = r x a
c. a = a x r
d. r = a x a
Answer  Explanation 

ANSWER: a = a x r

Explanation:
No explanation is available for this question!


31)   When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by______________?

a. Mass of a body
b. Velocity of body
c. The tension in the string
d. Centripetal acceleration
Answer  Explanation 

ANSWER: The tension in the string

Explanation:
No explanation is available for this question!


32)   Centripetal force performs_______________?

a. Maximum work
b. Minimum work
c. Negative work
d. No work
Answer  Explanation 

ANSWER: No work

Explanation:
No explanation is available for this question!


33)   When a body moves in a circle of radius r with linear speed V its centripetal force is_______________?

a. mV/r2
b. mV/r
c. mV2/r
d. mV2/r2
Answer  Explanation 

ANSWER: mV2/r

Explanation:
No explanation is available for this question!


34)   A stone is whirled in a vertical circle at the end of a string. When the stone is at the highest position the tension in the string is______________?

a. Maximum
b. Zero
c. Equal to the weight of the stone
d. Less than the weight of the stone
Answer  Explanation 

ANSWER: Equal to the weight of the stone

Explanation:
No explanation is available for this question!


35)   The span of the broad jump depends upon_______________?

a. Mass of the jumper
b. Height of jump
c. Angle of projection
d. None
Answer  Explanation 

ANSWER: Angle of projection

Explanation:
No explanation is available for this question!


36)   In case of planets the necessary acceleration is provided by______________?

a. Gravitational force
b. Frictional force
c. Coulomb force
d. Centripetal force
Answer  Explanation 

ANSWER: Gravitational force

Explanation:
No explanation is available for this question!


37)   If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is______________?

a. 4 rad. S-1
b. 5 rad. S-1
c. 1.6 rad. S-1
d. 2.8 ms-1
Answer  Explanation 

ANSWER: 5 rad. S-1

Explanation:
No explanation is available for this question!


38)   A body can have constant velocity when it follows a_____________?

a. Elliptical path
b. Circular path
c. Parabolic path
d. Rectilinear path
Answer  Explanation 

ANSWER: Rectilinear path

Explanation:
No explanation is available for this question!


39)   A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be_____________?

a. πR
b. 2π R
c. 0
d. 4πR
Answer  Explanation 

ANSWER: 0

Explanation:
No explanation is available for this question!


40)   The angular speed for daily rotation of the earth in rad S-1 is______________?

a. 7.3 x 10 radians/second
b. 7.3 x 5 radians/second
c. 3.7 x 10 7.3 x 5 radians/second
d. 7.3 x 10-5 radians/second
Answer  Explanation 

ANSWER: 7.3 x 10-5 radians/second

Explanation:
No explanation is available for this question!