# IIT JEE / PMT Test Series : Module 1 : +1 : Physics : Unit & Dimension

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Assertion(Reason A.Least count of all screw based instruments is same. R.Least counts for all screw based instruments are found using the ratio pitch per division of circular scale.
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not correct explanation of A
A is true, R is false
A is false, R is true
Comprehension Measurement is an important aspect to express any physical quantity. The measurement may be a direct or indirect approach. But the accuracy in the measurement depends on the approach, instrument, observation and proper recording. The error that might creep in will get propagated to all the places and in all relations where we use this measured value. Irrespective of the system, the product of number and unit is a constant. To find the radius of a tangent galvanometer which of the following is not required?
Scale
Screw gauge
Vernier caliper
Comprehension Measurement is an important aspect to express any physical quantity. The measurement may be a direct or indirect approach. But the accuracy in the measurement depends on the approach, instrument, observation and proper recording. The error that might creep in will get propagated to all the places and in all relations where we use this measured value. Irrespective of the system, the product of number and unit is a constant. As the value of number n in nu = constant is increased, the unit u will:
Be increased
Be decreased
Remain same
Increase according the system
Comprehension Measurement is an important aspect to express any physical quantity. The measurement may be a direct or indirect approach. But the accuracy in the measurement depends on the approach, instrument, observation and proper recording. The error that might creep in will get propagated to all the places and in all relations where we use this measured value. Irrespective of the system, the product of number and unit is a constant. The parallax of a distance object observed from two points across the diameter of our earth is 1( of an arc. If radius of earth is 6400 km, of the distance of the body is (1 A.U. = 1.5 × 108 km):
0.2 A.U
0.2 km
0.293 A.U.
1 A.U

A,B
B,C
C,D
A,B & D
Normal type of MCQ with one correct option The SI unit of the universal gravitational constant G is
Nm kg(2
Nm2 kg(2
Nm2 kg(1
Nm kg(1
Normal type of MCQ with one correct option The dimensions of the coefficient of viscosity are
ML2 T(2
MLT(1
ML(1 T(1
ML(1T(2
Normal type of MCQ with one correct option Which pair of quantities has dimensions different from the other three pairs?
Impulse and linear momentum
Planck’s constant and angular momentum
Moment of inertia and moment of force
Young’s modulus and pressure
Normal type of MCQ with one correct option Which one of the following is not a unit of length?
angstrom
light year
fermi
Description:

Brilliant Institute of Advance Studies, Chandigarh offers a complete test series for IIT JEE and PMT preparation for FREE at WiZiQ.com. This series constitutes 11 modules of each subjects +1 and +2 of all subjects Physics, Chemistry, Mathematics and Biology. The pattern of each test comprises all the types of objective questions of IIT JEE and AIPMT (MCQ with one or more correct option, Comprehension, Assertion-Reason, Match Matrix etc). This is the FREE Module test 1 of +1 Physics; the covered chapter is Unit & Dimension. Keep checking for Exclusive Paid Test series for IIT JEE and AIPMT from us at a very nominal cost at WiZiQ.com Happy Learning; all the best!

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Discussion

SIR,,, Does it possible that a physical quantity has a unit but not dimension??????

2961 days 9 hours 12 minutes ago

what a outstanding question.keep it up.

4361 days 7 hours 6 minutes ago

goooooddd testtt

4489 days 5 hours 6 minutes ago

thanks

4489 days 6 hours 30 minutes ago

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