The diagram below is an illustration of an a.c. circuit.Calculate the reactance of the capacitor.

• A. 2016Ω
• B. 2000Ω
• C. 200Ω
• D. 4000Ω

A member of the crew of a SPACESHIP experiences weightlessness in a space when they

• A. Fall freely from the earth’s gravitational field
• B. Is walking on the planet
• C. In between the sun and the earth
• D. Holding anything in space is negative

Which of the following correctly describes the energy changes in the generation of light by a hydroelectric power station?

• A. Electrical ? mechanical ? potential
• B. potential ?mechanical ?electrical ? light
• C. mechanical ? sound ? electrical ? light
• D. kinetic ? mechanical ? electrical ?light

ln the diagram below, the galvanometer indicates a null-deflection. What is the potential difference between P and Q?

• A. 0.0 V
• B. 1.5 V
• C. 2.0 V
• D. 3.0V

An electron of charge 1.60 x 10\(^{-19}\) C is accelerated under a potential difference of 1.0 x 10\(^5\) V. Calculate the energy of the electron in joules.

The energy required to separate the nucleus in an atom completely is known as

• A. mass defect of the atom
• B. electron binding energy
• C. excitation energy
• D. nuclear binding energy

Which of the following characteristics of a wave is used in the measurement of the depth of the sea?

• A. diffraction
• B. interference
• C. refraction
• D. reflection

A body of mass M kg rests on a plane inclined at an angle \(\theta\) to the horizontal. The component of the weight of the body parallel to the plane is

• A. Mg sin \(\theta\)
• B. Mg cos \(\theta\)
• C. Mg tan \(\theta\)
• D. Mg sec \(\theta\)

An object of height 4cm is placed in front of a cuboid pinhole camera of size 6 cm. if the image formed is 2 cm high, how far is the object from the pinhole?

• A) 3.0 cm
• B) 8.0 cm
• C) 12.0 cm
• D) 16.0 cm

For what value of 6 are the forces in the diagram below in equilibruim

• A. 15°
• B. 30°
• C. 45°
• D. 60°