Physics GK On-line Tests - Set 02 - ObjectiveBooks

# G.K. Practice Test: Question Set - 02

1. Isotopes of an element contain
(A) The same number of protons but different number of neutrons
(B) The same number of neutrons but different number of protons
(C) Equal number of protons and electrons
(D) Equal number of nucleons

2. Identify the vector quantity from the following
(A) Heat
(B) Angular momentum
(C) Time
(D) Work

3. An aeroplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically at a point A on the ground a bomb is released from it. The bomb strikes the ground at point B. The distance AB is
(A) 1200 m
(B) 0.33 km
(C) 3.33 km
(D) 33 km

4. Photosynthesis takes place faster in
(A) Yellow light
(B) White light
(C) Red light
(D) Darkness

5. It is more difficult to walk on a sandy road than on a concrete road because
(A) Sand is soft and concreter is hard
(B) The friction between sand and feet is less than that between concrete and feet
(C) The friction between sand and feet is more than that between concrete and feet
(D) The sand is grainy but concrete is smooth

6. Radiocarbon is produced in the atmosphere as a result of
(A) Collision between fast neutrons and nitrogen nuclei present in the atmosphere
(B) Action of ultraviolet light from the sun on atmospheric oxygen
(C) Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
(D) Lightning discharge in atmosphere

7. Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to
(A) The heating effect of current alone
(B) Hysteresis loss alone
(C) Both the heating effect of current and hysteresis loss
(D) Intense sunlight at noon

8. Study of life in outer space is known as
(A) Endobiology
(B) Exobiology
(C) Entrobiology
(D) Neobiology

9. If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same
(A) Velocity
(B) Momentum
(C) Acceleration
(D) Kinetic energy

10. Of the following properties of a wave, the one that is independent of the other is its
(A) Amplitude
(B) Velocity
(C) Wavelength
(D) Frequency

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