Physics : General Knowledge Questions and Answers

Q61. To produce deflection in a television picture tube:

[A] both electric and magnetic field are used

[B] an electric field is used

[C] a magnetic field is used

[D] none of the above

Q62. Newton’s second law of motion

[A] explains about change in momentum.

[B] is also called as law of inertia

[C] explains about change in momentum.

[D] describes the relationship between the forces on two interacting objects.

Q63. Temperature can be expressed as derived quantity in terms of any of the following

[A] in terms of none

[B] length and mass

[C] mass and time

[D] length,mass and time

Q64. Erg cross Sec is the unit of

[A] Energy

[B] Angular momentum

[C] Planck’s constant

[D] Linear Momentum

250+ Physics Quiz Questions and Answers

Q65. It is more difficult to walk on ice than on a concrete road because 

[A] there is more friction between the ice and feer

[B] there is very little friction between the ice and feet pressing it

[C] ice is soft when compared to concrete

[D] None of these

Q66. The atmospheric pressure at sea level is __________ atm.

[A] 0.1

[B] 0

[C] 1

[D] 0.001

Q67. The core of an electromagnet is made of soft iron because soft iron has 

[A] large susceptibility and small retentivity

[B] large density and large retentivity

[C] small density and large retentivity

[D] large susceptibility and small retentivity

Q68. Light from the sun reaches us in nearly

[A] 8 min

[B] 5 min

[C] 5.30 hrs

[D] 4.30 hrs

Q69. A device G.M counter is used for the measurement of which of the following?

[A] Radioactivity

[B] Valence

[C] Mass number

[D] Speed of air 

Q70. Energy is continuously generated in the sun due to

[A] Artificial radioactivity

[B] Radioactivity

[C] Nuclear fission

[D] Nuclear fusion