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[Set-4] Physics MCQ for Competitive Exams

MCQ-1 Which among the following gases does not help in the depletion of ozone in the ozone layer?

A) NO
B) NO2
C) CFC
D) CO2

Answer

D) CO2

MCQ-2 Which among the following substances has the highest heat conductivity?

A) Silver
B) Diamond
C) Copper
D) Aluminium

Answer

B) Diamond

MCQ-3 Let violet and red light has same incident angle on prism and r and v are the angle of refraction from the prism respectively. Which relation among the following is correct?

A) r = v
B) r > v
C) r < v
D) r = 1/v

Answer

r < v

MCQ-4 Coulomb’s law is applicable when of the two charges

A) one is point, one is spherical
B) both are spherical
C) one is point, one is extended
D) both are points

Answer

D) both are points

MCQ-5 The characteristics of a fuse wire are

A) high resistance, high melting point
B) low resistance, low melting point
C) low resistance, high melting point
D) high resistance, low melting point

Answer

high resistance, and low melting point.

MCQ-6 Present in alpha particle

A) one proton, one neutron
B) one proton
C) two proton, two neutron
D) one electron

Answer

C) two proton, two neutron

MCQ-7 Which of the following is not a periodic property of elements?

A) density
B) boiling point
C) melting point
D) radioactivity

Answer

D) radioactivity

MCQ-8 Choose whether the following statement is true or false:
StateMent: Among copper, invar and iron the linear expansion coefficient of iron is the lowest.

A) True
B) False

Answer

False: invar has the lowest expansion coefficient

MCQ-9 Which kind of nuclear reaction produces energy in a nuclear reactor?

A) Fission
B) Fusion
C) Both
D) None

Answer

A) Fission

MCQ-10 Where in the front of a concave mirror image of an extended object placed at infinity will be formed by the mirror?

A) at focus
B) between focus and pole
C) at double the focus
D) at infinity

Answer

A) at focus

INFO: Multiple Choice Question answer for competitive exams. These objective questions with answers are important for West Bengal class 10 madhyamik or secondary board exam.

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Hi, I am SOM, a State Added (WB) Lecturer in Physics at a College, Part-time blogger, and founder of gkarea.com, started blogging since 2015 and still learning.