1.A convex lens of focal length 10.0cm is used to form a real image which is half the size of the object. How far from the object is the image?
- A. 45cm
- B. 30cm
- C. 15cm
- D. 20cm
2.A diverging lens of a focal length 20cm forms an image halve of the size of the object. What is the object distance?
- A. 11.11cm
- B. 100cm
- C. 60cm
- D. 8.71cm
3.The principle of operation of an induction coil is based on
- A. ohm's law
- B. ampere's law
- C. faraday's law
- D. coulomb's law
4.A malaria patient has a temperature of 39.5⁰C. What is the person temperature in K?
- A. 103.1
- B. 312.65
- C. -273.15
- D. 373.15
5.The force between the molecules of a liquid in contact with that of a solid is
- A. adhesive
- B. cohesive
- C. magnetic
- D. repulsive
6.Combination of the three gas laws is known as?
- A. equation of state
- B. kinetic theory of gases
- C. zeroth law of thermodynamics
- D. first law of thermodynamics
7.What is the dimension of pressure?
- A. ML⁻¹T⁻²
- B. MLT⁻²
- C. ML²T⁻³
- D. ML⁻³
8.A body is projected from the earth’s surface with the hope of letting it escape from the earth’s gravitational field. What is the minimum escape velocity?(Earth's radius = 6.4 × 10³ Km, g = 10 ms⁻²)
- A. 14.3 kms⁻¹
- B. 13.3 kms⁻¹
- C. 12.3 kms⁻¹
- D. 11.3 kms⁻¹
9.Two bodies have masses in the ratio 3:1. They experience forces which impart to them acceleration in the ratio 2:9 respectively. Find the ratio of forces the masses experienced.
10.When temperature of a liquid increases, its surface tension
- A. decreases
- B. increases
- C. remain constant
- D. increases then decrease
11.A 5kg block is released from rest on a smooth plane inclined at an angle of 30⁰ to the horizontal. What is the acceleration down the plane?(g = 10ms⁻²)
- A. 5.0 ms⁻²
- B. 8.7 ms⁻²
- C. 25.0 ms⁻²
- D. 5.8ms⁻²
12.A man stands 4m in front of a plane mirror. If the mirror is moved 1m towards the man, the distance between him and his new image is
13.An electric cell has an external resistance of 2 . A current of 0.5Ampere was measured when a resistor of resistance 5 Ω was connected across it. Determined the electromotive force of the cell.
- A. 3.5V
- B. 2.5V
- C. 4.5V
- D. 2.35V
14.Calculate the acceleration of a particle of mass 4kg which is acted upon by a force 5N.
- A. 2.0 ms⁻²
- B. 1.25ms⁻²
- C. 12.5ms⁻²
- D. 20.0ms⁻²
15.It is known that an atomic nucleus comprises of positively charged protons. Which of the following also exist in the nucleus
- A. beta particle
- B. alpha particle
- C. neutron
- D. electron
16.The electromagnetic waves that are sensitive to temperature changes are
- A. Ultra-violet rays
- B. gamma-ray
- C. infra-red rays
- D. x-rays
17.The silver wall of a vacuum flask prevents heat loss due to
- A. Diffraction
- B. Conduction
- C. convection
- D. radiation
18.The coefficient of kinetic friction between smooth, dry surface of steel and wood is approximately 0.02. Calculate the force require to pull 15kg block of steel along a horizontal wooden surface at a steady speed of 0.2m/s.
- A. 1.94N
- B. 2.49N
- C. 1.52N
- D. 2.94N
19.Which of the following radiation cannot be deflected by an electric field or a magnetic field? I. Alpha particle II. beta particle III. gamma particle IV. x-ray
- A. I, II and III
- B. I and III
- C. III and IV
- D. I and III
20.A vehicle of mass m is driven by an engine of power p from rest. Find the minimum time t it will take to acquire a speed V.
- A. mv² /p
- B. mv²/2p
- C. mv/p
- D. MV/2p