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11th standard physics Nature of Physical World and Measurement one mark important questions

Published on: 26/04/2019

Download Tamil Nadu 11th Standard Physics question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.

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Std: 11th Standard - Physics

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Questions:

Multiple Choice Question

25 x 1 = 25

Find the value of one Au in 1000km _____________.

(a)

1.5 \(\times\)10⁵m

(b)

2.5\(\times\)10⁶m

(c)

1.5\(\times\)10¹¹m

(d)

2.5\(\times\)10¹⁰m

The fractional error \(\left( {{\triangle x}\over{x}} \right)\) _____________.

(a)

\(\pm\left( {{\triangle x}\over{x}} \right)\)

(b)

\(\pm n\left( {{\triangle a}\over{a}}\right)\)

(c)

\(\pm n \log_e \left( {{\triangle a}\over{a}}\right)\)

(d)

\(\pm n \log_{10}{{\triangle a}\over{a}}\)

The density of a cube is measured by measuring its mass and length of its side. If the maximum error in the measurement of mass and length are 5% and 3% respectively, the maximum error in the measurement of density is _____________.

(a)

(b)

(c)

14%

(d)

The dimensions of universal gravitational constant is ______________.

(a)

M²L³T^-2

(b)

M²L²T^-1

(c)

M^-1L³T^-2

(d)

ML²T^-1

The dimensions of K.E. is _______________.

(a)

M²L²T^-1

(b)

M¹L¹T¹

(c)

M¹L²T^-2

(d)

M²L²T^-2

If force |F|, velocity |V| and time |T| are taken as to fundamental units then the dimensions of mass are _______________.

(a)

FV^-1T

(b)

FV^-1T

(c)

FVT^-1

(d)

FVT^-2

If E & B respectively, represent electric field and magnetic induction field, then the ratio E & B has the dimensions of ______________.

(a)

angle

(b)

acceleration

(c)

velocity

(d)

displacement

The number of significant figures in 2.64\(\times\)10⁴ kg is ______________.

(a)

(b)

(c)

(d)

The number of significant figures in 0.0006012 m is

(a)

(b)

(c)

(d)

10.

Which of the following Statement is true?

(a)

Velocity is a fundamental unit

(b)

Solar day = 24 hours.

(c)

1 Shake = 10⁴s

(d)

mass is a derived unit

11.

Which of the following statement is wrong?

(a)

one fermi = 10¹⁵ m

(b)

All non-zero digits are significant.

(c)

1 AU = 1.496 \(\times\)10¹¹m

(d)

Speed is a derived unit

12.

Which device is used for measuring the mass of atoms?

(a)

Spectrograph

(b)

Fermi

(c)

Telescope

(d)

Microscope

13.

The acceleration of 20 m/s² in km/h² is ______________.

(a)

2.59 \(\times\) 10⁵ km/h²

(b)

1.29 \(\times\) 10⁵ km/h²

(c)

2.0 \(\times\)10³ km/h²

(d)

3.5 \(\times\)10⁵ km/h²

14.

What is the value of one light year in tera metre?

(a)

9.46 \(\times\) 10⁶Tm

(b)

9.46 \(\times\)10⁹Tm

(c)

9.46 \(\times\) 10²Tm

(d)

9.46 \(\times\) 10³Tm

15.

How many AU makes one metre?

(a)

3.26 \(\times\) 10¹¹AU

(b)

1.496 \(\times\) 10¹¹AU

(c)

3.08 \(\times\) 10¹⁶AU

(d)

6.684 \(\times\) 10^-12AU

16.

How many light years make 1 per sec?

(a)

3.26

(b)

6.67

(c)

1.5

(d)

9.4

17.

One parallactic second is ______________

(a)

3.08 \(\times\)10¹⁶ m

(b)

1.49 \(\times\)10¹¹ m

(c)

9.46 \(\times\) 10¹⁵ m

(d)

1.66 \(\times\) 10^-27 m

18.

Match the following fundamental forces with respect to relative strengths.

(1)	Gravitational force	(a)	1
(2)	Electromagnetic force	(b)	10^-39
(3)	Weak nuclear force	(c)	10^-2
(4)	Strong nuclear force	(d)	10^-13

(a)

(1)	(2)	(3)	(4)
a	d	b	c

(b)

(1)	(2)	(3)	(4)
b	c	d	a

(c)

(1)	(2)	(3)	(4)
c	d	a	b

(d)

(1)	(2)	(3)	(4)
c	a	b	d

19.

Match the following:

(1)	Steam engine	(a)	Bernoulli's principle
(2)	Nuclear reactor	(b)	Laws of thermodynamics
(3)	Production of ultra high magnetic fields	(c)	Controlled nuclear fission
(4)	Aeroplane	(d)	Super Super