Which of the following statements is the major advantage of nuclear fusion over nuclear fission?

• A. nuclear fusion releases more energy
• B. more neutrons are released in fusion than in fission
• C. fussion does not release as much dangerous radiation as fission
• D. fusion reactions occur more readily than fission

A force acting on a body causes a change in the momentum of a body from 12 kg ms^-1 to 16kg ms^-1 in 0.25. Calculate the magnitude of the impulse

• A. 28.0Ns
• B. 20.0Ns
• C. 4.0Ns
• D. 0.8Ns

An electric heater has a resistance of 50Ω. When it is immersed in water and connected to mains source, it draws a current of 4.0A. Calculate the heat gained by the water if the heater is switched on for 2 minutes, assuming no heat losses to the surroundings

• A. 4200J
• B. 1600J
• C. 24000J
• D. 96000J

A satellite launched with velocity V\(_E\) just escapes the earth's gravitational attraction. Given that the radius of the earth is R, show that V\(_E\) = \(\sqrt{20R}\) [g = 10ms\(^{-2}\)

The eclipse of the moon occurs when?

• A. the moon reflects the rays from the sun to the earth
• B. the moon comes exactly between the earth and the sun
• C. the earth comes exactly between the moon and the sun
• D. the sun comes exactly between the earth and the moon

In which of the following media is the transmission of sound wave fastest?

• A. Vacuum
• B. Air
• C. Wood
• D. Iron

If the distance from a point source of sound is doubled, by what factor does the intensity decrease?

• A. 4.00
• B. 2.00
• C. 0.50
• D. 0.25

The following are parts of the eye

I. Retina

II. Pupil

III. Iris

The correct equivalent in the camera in the same order are

• A. Diaphragm, Aperture, film
• B. Aperture, Diaphragm, Film
• C. Film, Diaphragm, Aperture
• D. Film, Aperture, Diaphragm

A resistor with fixed resistance value is called a

• A. resistance box
• B. standard resistor
• C. shunt resistor
• D. multiplier resistor

Which of the following wave characteristics can be used to distinguish a transverse wave from a longitudinal wave?

• A. Reflection
• B. Refraction
• C. Diffraction
• D. Polarization