A new temperature scale uses X as a unit of temperature, where the numerical value of the temperature t x in this scale is related to the absolute temperature T by t x = 3 T + 300 . If the specific heat of material using this unit is 1400 J kg - 1 X - 1 its specific heat in the S.I. system of units is :

Impossible to determine from the information provided.

The physics behind fusion test reactor is:

Trapping and cooling of atoms by laser beams and magnetic fields

Motion of charged particles in electromagnetic fields

EASY

NEET

IMPORTANT

Earn 100

Match the physical quantities with their correct $SI$ units.

List-I List-II

(A) Planck's constant (I) $kg m s^{- 2}$

(B) Torque (II) ${kg}^{- 1} m^{3}$

(C) Weight (III) $m^{2} kg s^{- 1}$

(D) Specific volume (IV) $kg m^{2} s^{- 2}$

The correct match is

58.22% studentsanswered this correctly

Important Questions on Physical World and Measurement

EASY

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 2>Q 4

Match the following?

Column -I		Column -II
(a)	Conductance	(i)	Gray
(b)	Magnetic Induction	(ii)	Lumen
(c)	Absorbed dose	(iii)	Tesla
(d)	Luminous flux	(iv)	Siemens

EASY

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Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 2>Q 5

Curie is a unit of

EASY

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IMPORTANT

Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 2>Q 7

The dimensional equation for the electrical resistance of a conductor is

MEDIUM

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IMPORTANT

Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 2>Q 8

A new temperature scale uses

X

as a unit of temperature, where the numerical value of the temperature

t_{x}

in this scale is related to the absolute temperature

T

t_{x} = 3 T + 300

. If the specific heat of material using this unit is

1400 J {kg}^{- 1} X^{- 1}

its specific heat in the S.I. system of units is :

EASY

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 2>Q 9

A neutron star with magnetic moment of magnitude

m

is spinning with angular velocity

ω

about its magnetic axis. The electromagnetic power

P

radiated by it is given by

μ_{0}^{x} m^{y} ω^{2} c^{u},

where

μ_{n}

and

c

are the permeability and speed of light in free space, respectively. Then

MEDIUM

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 2>Q 10

A beaker contains a fluid of density

ρ

\frac{k g}{m^{3}}

, specific heat

S \frac{J}{k g^{o} C}

and viscosity

η

. The beaker is filled up to height h. To estimate the rate of heat transfer per unit area

(\frac{\dot{Q}}{A})

by convection when beaker is put on a hot plate, a student proposes that it should depend on

η

(\frac{S Δ θ}{h})

and

(\frac{1}{ρ g})

when

Δ θ

(

{i n}^{o} C

) is the difference in the temperature between the bottom and top of the fluid. In that situation the correct option for

(\frac{\dot{Q}}{A})

is:

MEDIUM

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 2>Q 11

If electronic charge

e

, electron mass

m

, speed of light in vacuum

c

and Planck's constant

h

are taken as fundamental quantities, the permeability of vacuum

μ_{0}

can be expressed in units of:

EASY

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 1 - Physical World and Measurement>Level 2>Q 16

C . G . S .

system, the magnitude of the force is

100 dyne .

In another system where the fundamental physical quantities are kilogram, metre and minute, the magnitude of the force is

	List-I		List-II
(A)	Planck's constant	(I)	$kg m s^{- 2}$
(B)	Torque	(II)	${kg}^{- 1} m^{3}$
(C)	Weight	(III)	$m^{2} kg s^{- 1}$
(D)	Specific volume	(IV)	$kg m^{2} s^{- 2}$

Match the physical quantities with their correct SI units. List-I List-II (A) Planck's constant (I) kg m s-2 (B) Torque (II) kg-1 m3 (C) Weight (III) m2 kg s-1 (D) Specific volume (IV) kg m2 s-2 The correct match is

Important Questions on Physical World and Measurement

Learn and Prepare for any exam you want !

Match the physical quantities with their correct $SI$ units.

List-I List-II

(A) Planck's constant (I) $kg m s^{- 2}$

(B) Torque (II) ${kg}^{- 1} m^{3}$

(C) Weight (III) $m^{2} kg s^{- 1}$

(D) Specific volume (IV) $kg m^{2} s^{- 2}$

The correct match is