Physics Term Test NEET

Length, breadth and height of a cuboid are measured as (7.00 ± 0.07), m, (6.00 ± 0,06) m and (4.00 ± 0.04) m respectively. The volume of the cuboid up to correct significant figure is

(168 ± 2) m³.

the screw advances by 0.5mm on two complete rotations and number of division on the circular scale is 125. The least count of screw gauge

0.002 mm

In a vernier calliper one main scale reading is 0.5mm and ninth main scale division concide with tenth vernier scale division the lease count of vernier calliper is

0.05 mm

In a vernier calliper 4 VSD colnicides with 2 MSD, then least count of vernier calliper is

0.2 mm

You measure two quantities as A=1.0m±0.2m, B=2.0m±0.2m. We should report correct value for AB​ as

1.4m±0.2m.

for given vernier caliper 6 divisions of vernier scale are equal to 4 divisions of main scale, If one main scale division of 1mm, then the least count of the vernier callipers is

1/3 MM

The value Of 100 kg — 0.370 kg with correct significant figure will be

100 kg

If the unit of power is 1KW, the length is 100 m and time is 10s, then the unit of mass will be

10kg

The length of a rod is measured as 110.32 cm, 3 significant figures

111 cm

The order of magnitude of 1024.0 kg is

3

If the maximum percentage error in measurement of momentum is 1.5%, and there is no error in mass then maximum percentage error in the measurement of kinetic energy is

3%

a physical quantity x is related to four quantities a, b, y and p as x. 1/3 %, 1/2 %, 2%

3.5%

In CGS system the magnitude of the force is 100 dynes. In another system where the fundamental physical quantities are kilogram, meter, and minute, find the magnitude of the force.

3.6

the numbers 3.745 and 3.735 on rounding off to 3 significant figures will be

3.74 and 3.74

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Maximum percentbge error in A is 20%. E it 0.1% and C is 0,2%. The maximum percentage error in A^2B / C is

4.3%

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The significant figures in 300.500 are

6

if x= a^2 + b^3 / square root C and the percentage error in the measurement of A,B,C are 1%, 2%, and 2% respectively then maximum percentage errors in the value of x would be

6%

A student measures the distance traversed in free fall of a body, initially at rest, in a given time. He uses this data to estimate g, the acceleration due to gravity. If the maximum percentage errors in the measurement of the distance and the time are A1​ and a2​ respectively, the percentage error in the estimation of g is:

A1 + 2A^2

Quantum model of atom is given by

Bohr

If a composites physical quantity is defined as P=√mLH where m = mass L = latent heat and H = heat energy. Then P has dimensions same as

Both 1 and 2

Assertion (A): Absolute error in physical quantity can be positive, negative or zero. Reason (R): Absolute error is the difference in measured value and true value of physical quantity.

Both A and R are true and R is the correct explanation of A.

A: A dimensionally consistent equation need not be an exact (mathematically correct) equation. R : A mathematical relation that is inconsistent dimensionally. necessarily a wrong equation.

Both Assertion (A) and Reason (R) are true, and Reason (R) is indeed the correct explanation of Assertion (A).

The scientist who is credited for his work in unification of electromagnetism and optics is

Faraday

The discovery of Sir C.V Raman is

Inelastic scattering of light by molecule

The law of conservation of angular momentum is related to which of the following symmetries in nature?

Isotropy of space

The position of a particle at time t is given by the relation x(t)=(v0α)(1−c−at), where v0 is a constant and α>0. Find the dimensions of v0

M0LT−1

If the velocity of a moving particle is given by v= at2 +bt +c where t is time, then the dimensional forumla of ab/c is

M^0LT^-4

Friction is mediated from which of the following

Photon

which of the following forces has the shortest range

Weak Nuclear Force

Pick out the wrong statement among the following

Weak nuclear force is weakest force of nature.

the scientific principle involved in laser

amplification by population inversion

Assertion According to principle of homogenity. we cannot add torque to work done. Reason Two physical quantities must be added when they have same dimensional fourmula.

both assertion and reason are true, and the reason is the correct explanation of the assertion.

The energy of a particle at position x and at time t is given as E = Ax + Bx /(C+t²). The dimensional formula of B/C is same as of

force

Not answering

graph question

if the dimensions of speed are expressed as h^a l^b f^c where H is Planck constant, l is length, f is force and a,b,c are constants then

is a=2, b=-1, c=1

Who unified celestial and terrestrial mechanics?

newton

which of the following statements is incorrect regarding nuclear forces

nuclear forces are central forces and independent of spin of the nucleon

Among the given options, which is unit of time

shake

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