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