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

Published on: 26/04/2019

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

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

chapter: - Model Question paper

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Questions:

Multiple Choice Question

25 x 1 = 25

1.

Find the value of one Au in 1000 km _____________.

(a)

1.5 \(\times\)10⁵m

(b)

2.5\(\times\)10⁶m

(c)

1.5\(\times\)10¹¹m

(d)

2.5\(\times\)10¹⁰m

2.

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)

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

3.

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)

9%

(b)

8%

(c)

14%

(d)

2%

4.

The dimensions of universal gravitational constant is ______________.

(a)

M²L³T^-2

(b)

M²L²T^-1

(c)

M^-1L³T^-2

(d)

ML²T^-1

5.

The dimensions of K.E. is _______________.

(a)

M²L²T^-1

(b)

M¹L¹T¹

(c)

M¹L²T^-2

(d)

M²L²T^-2

6.

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

7.

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

8.

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

(a)

2

(b)

4

(c)

5

(d)

3

9.

The number of significant figures in 0.0006012 m is

(a)

3

(b)

4

(c)

7

(d)

5

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 terametre?

(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 parsec?

(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

(a)

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

(b)

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

(c)

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

(d)

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

20.

The law of electricity and magnetism is used to ____________

(a)

Wireless communication

(b)

Nuclear reactor

(c)

Steam engine

(d)

Aeroplane

21.

What is the range of astronomical time scales to microscopic scales?

(a)

10¹⁵S to 10^-15S

(b)

10⁹S to 10^-18S

(c)

10¹⁸S to 10^-22S

(d)

10¹¹S to 10^-16S

22.

Which is deals with the study of materials of an intermediate length scale?

(a)

Macro physics

(b)

Macroscopic physics

(c)

Microscopic physics

(d)

All the above

23.

Microscopic group of Physics dealt with the study of ____________.

(a)

classical physics

(b)

statistical mechanics

(c)

fluid mechanics

(d)

quantum physics

24.

Astronomical Scale is dealt with the _________ Physics

(a)

Mesoscopic

(b)

Microscopic

(c)

Macroscopic

(d)

None

25.

The word scientia is meaning to ___________.

(a)

exact

(b)

to know

(c)

control

(d)

implement

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Answers Key:

Multiple Choice Question

25 x 1 = 25

1.

(a)
1.5 \(\times\)10⁵m

2.

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

3.

(c)
14%

4.

(c)
M^-1L³T^-2

5.

(c)
M¹L²T^-2

6.

(c)
FVT^-1

7.

(c)
velocity

8.

(d)
3

9.

(b)
4

10.

(b)
Solar day = 24 hours.

11.

(a)
one fermi = 10¹⁵ m

12.

(a)
Spectrograph

13.

(a)
2.59 \(\times\) 10⁵ km/h²

14.

(d)
9.46 \(\times\) 10³Tm

15.

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

16.

(a)
3.26

17.

(a)
3.08 \(\times\)10¹⁶ m

18.

(b)

(1) (2) (3) (4)

b c d a

19.

(d)

(1) (2) (3) (4)

b c d a

20.

(a)
Wireless communication

21.

(c)
10¹⁸S to 10^-22S

22.

(a)
Macro physics

23.

(d)
quantum physics

24.

(c)
Macroscopic

25.

(b)
to know

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