Physics is the science that studies the nature and properties of matter and energy. It covers topics like motion, heat, light, sound, electricity, magnetism, and the structure of atoms.
-
Question 271: Two objects, one having three times the mass of the other, are dropped at the same time from a tall building. When they are above the ground, the two objects will have the same
Options:
A) Momentum
B) Kinetic energy
C) Potential energy
D) Acceleration
Show Answer
The correct answer is C .
-
Question 272: When light is incident on an object which is magenta in colour, which of the following colour would be absorbed?
Options:
A) Red and blue
B) Green only
C) Red and green
D) Red only
Show Answer
The correct answer is B .
-
Question 273:
An astronomical telescope is said to be in normal adjustment when the?
Options:
A) eye is accommodated
B) focal length of an object lens is longer than that of eye piece
C) final image is at the near point of eye
D) final image is at infinity
Show Answer
The correct answer is D .
-
Question 274: If light with photon energy 2eV is incident suitably on the surface of a metal with work function 3eV, then
Options:
A) no electron will be emitted
B) the few electrons emitted will have a maximum kinetic energy of 1eV
C) the few electrons emitted will have a maximum kinetic energy of 3eV
D) many electrons will be emitted
Show Answer
The correct answer is A .
-
Question 275: The particle that is responsible for the nuclear fission in a nuclear reactor is
Options:
A) neutron
B) prton
C) electron
D) photon
Show Answer
The correct answer is A .
-
Question 276: An object placed on the principle axis of a convex lens of focal length 10m produces a real image of double magnification. The image distance from the lens is
Options:
A) 30cm
B) 25cm
C) 20cm
D) 15cm
E) 10cm
Show Answer
The correct answer is A .
-
Question 277:

In the diagram above , the current I is
Options:
A) 3/8
B) 9/11
C) 11/9
D) 8/3
Show Answer
The correct answer is B .
-
Question 278: The optical instrument which is suitable for viewing a nearby objects is ………..?
Options:
A) Telescope
B) sextant
C) microscope
D) periscope
Show Answer
The correct answer is C .
-
Question 279:

The wave motion above has a frequency
Options:
A) 0.1Hz
B) 0.2Hz
C) 5Hz
D) 10Hz
E) 100Hz
Show Answer
The correct answer is C .
-
Question 280: Which of the following has the lowest internal resistance when new?
Options:
A) leclanche cell
B) Daniel cell
C) Accumulator
D) Torch battery
Show Answer
The correct answer is C .