In a nuclear fusion experiment, the loss of mass amounts to 1.0 x 10^-6kg. The amount of energy obtained from the fusion is

• A. 3.0 x 10^-4J
• B. 3.0 x 10^-1J
• C. 9.0 x 10⁴J
• D. 9.0 x 10¹⁰J

Which of the following physical quantities are derived? i. Area ii. Thrust iii. Pressure iv. Mass

• A. i, ii, iii and iv
• B. i, ii and iii only
• C. i, ii and iv only
• D. i and iii only

A beam of light travelling in water is incident on a glass which is immersed in the water. The incident beam makes an angle of \(40^o\) with the normal. Calculate the angle of refraction in the glass.

[Refractive index of water = 1.33, Refractive index of glass = 1.5]

• A. \(29.36^o\)
• B. \(25.37^o\)
• C. \(37.21^o\)
• D. \(34.75^o\)

A charge of \(4.6 × 10^-5\)C is placed in an electric field of intensity \(3.2 × 10^4\) \(Vm^-1\). What is the force acting on the electron?

• A. 1.5 N
• B. 3.7 N
• C. 4.2 N
• D. 2.5 N

When a ship sails from salt water into fresh water, the fraction of its volume above the water surface will

• A. increase
• B. decrease
• C. remain the same
• D. increase then decrease

he value of x, y and z respectively in the expression M^xL^yT^z for the universal gravitational constant G are

• A) 2, -3, -2
• B) -1, 3, -2
• C) -1, 2, -3
• D) -2, -1, 3

Two identical cells each of e.m.f 2v and internal resistance 1.0Ω are connected in parallel. The combination is connected to an external load of 1.5Ω. Calculate the current in the circuit

• A. 0.57A
• B. 1.00A
• C. 1.14A
• D. 2.00A

The diagram below shows the position of a simple pendulum set in motion. At which of the positions does the pendulum have maximum kinetic energy?

• A. 5
• B. 4
• C. 3
• D. 2

One special advantage of alcohol over mercury as a thermometric liquid is its

• A) low density
• B) low freezing point
• C) high specific
• D) low boiling point

Define (a) tensile Stress; (b) tensile strain; (c) yield point.