NEET 2020 Phase 1 | Units & Measurement Question 22 | Physics

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NEET 2020 Phase 1

MCQ (Single Correct Answer)

-1

The energy required to break one bond in DNA is 10^-20 J. This value in eV is nearly :

0.6

0.06

0.006

NEET 2019

MCQ (Single Correct Answer)

-1

In an experiment, the percentage of error occurred in the measurement of physical quantities A, B, C and D are 1%, 2 %, 3 %and 4 % respectively. Then the maximum percentage of error in the measurement X, where
X = $${{{A^2}{B^{1/2}}} \over {{C^{1/3}}{D^3}}}$$, will be :

16%

-10%

10%

$$\left( {{3 \over {13}}} \right)$$%

NEET 2018

MCQ (Single Correct Answer)

-1

A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale reading is 5 mm and zero of circular scale division coincides with 25 divisions above the reference level. If screw gauge has a zero error of –0.004 cm, the correct diameter of the ball is

0.521 cm

0.525 cm

0.053 cm

0.529 cm

NEET 2017

MCQ (Single Correct Answer)

-1

A physical quantity of the dimensions of length that can be formed out of c, G and $${{{e^2}} \over {4\pi {\varepsilon _0}}}$$ is [c is velocity of light, G is the universal constant of gravitation and e is charge]

$${c^2}{\left[ {G - {{{e^2}} \over {4\pi {\varepsilon _0}}}} \right]^{1/2}}$$

$${1 \over {{c^2}}}{\left[ {{{{e^2}} \over {G\,4\pi {\varepsilon _0}}}} \right]^{1/2}}$$

$${1 \over c}G{{{e^2}} \over {\,4\pi {\varepsilon _0}}}$$

$${1 \over {{c^2}}}{\left[ {G{{{e^2}} \over {\,4\pi {\varepsilon _0}}}} \right]^{1/2}}$$

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NEET Subjects

Biology

Botany

Zoology

Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution