MCQ TEST OF PHYSICS FIRST YEAR

1. Branch of physics that deals with the application of physical methods and types of of explanation to bio-physical systems is called:

a) Astrophysics

b) Biophysics

c) Plasma physics


2. When a vector is multiplied by a negative number its direction changes by an angle of:

a) o

b) 180

c) 360


3. Force friction can be reduced by using ball bearings because they:

a) make the surface plane.

b) make the surface greasy.

c) convert sliding friction into rolling friction.


4. Tangential acceleration is directed:

a) towards the center of circular path

b) away from the center of circular path

c) along the tangent to the circular


5. Friction between road and tyres of a car moving along a circular track provides

a) centripetal acceleration

b) centripetal force

c) centrifugal force


6. Turning effect of a force about an axis of rotation is called:

a) moment arm

b) couple

c) torque


7. The apparent weight of a body in a satellite orbiting around the earth is:

a) zero

b) increasing

c) decreasing


8. A body in motion has the ability to do work, this ability of doing work due to motion is called:

a) energy

b) kinetic energy

c) nuclear energy


9. When stationary waves are set up in a stretched string it has fundamental frequency of 1,000Hz. What would be the new fundamental frequency if the tension in the wire is increased four times?

a) 980Hz

b) 1010Hz

c) 2000Hz


10. The transverse nature of light can be verified by:

a) interference

b) polarization

c) diffraction


11. If an elevator moves upward with constant velocity, apparent weight of bodies in it will be:

a) more than mg

b) less than mg

c) equal to mg


12. Weight of a body at the centre of the earth is:

a) double it's weight of a body orbiting the earth:

b) zero

c) negative


13. If mass of a body executing S.H.M under the action of elastic restoring force is increased its time period.

a) increases

b) decreases

c) remains constant


14. Polarization of light due to tourmaline crystals takes place because of:

a) reflection

b) selective absorption

c) refraction


15. The condition for the interference in a thin film is reversed because of

a) small thickness

b) phase reversal

c) refraction


16. If combination of two convex lenses is such that if parallel rays enter the combination rays leaving the combination are also parallel, then the distance between the lenses will be equal to :

a) sum of their focal length

b) difference of their focal lengths

c) sum of reciprocals of their focal lengths


17. Objective of an astronomical telescope forms:

a) real, inverted and magnified image

b) real, inverted and small image

c) virtual, inverted and small image


18. Power of convex lens of focal length 10cm is:

a) +10 diopter

b) -10 diopter

c) 1.0 diopter


19. If a single convex lens is placed close to the eye it is being used as:

a) compound microscope

b) simple microscope

c) telescope


20. Which property of light is used to determine the concentration of an optically active substance such as sugar?

a) Interference

b) dispersion

c) polarization



Score =

Correct answers: