physics

The breaking up of an atomic nucleus into the fragment of nearly equal size is known as?

A. nuclear fusion B. nuclear fission C. thermonuclear reaction D. natural radioactivity Correct Answer: Option B B. nuclear fission

6 years ago

Which of the following statements about a bar magnet is correct?

A. iron fillings cling uniformly along the length of a bar magnet B. the magnetic properties are more pronounced at…

6 years ago

An electric lamp rated 120W is used on a 240Vrms, calculate the resistance of its filament?

A. 480Ω B. 360Ω C. 60Ω D. 2Ω Correct Answer: Option A A. 480Ω

6 years ago

A cell of e.m.f. 1.5V and internal resistance 1.0Ω is connected to two resistors of resistance 2.0Ω and 3.0Ω in series. Calculate the current through the resistors?

A. 0.25A B. 0.30A C. 0.35A D. 0.50A Correct Answer: Option A A. 0.25A Explanation I = E/(R+r)=1.5/(5+1) = 1.56=0.25A

6 years ago

The equivalent capacitance of a 3μF capacitor and a 6μF capacitor connected in parallel is?

A. 2.0μF B. 3.0μF C. 4.5μF D. 9.0μF Correct Answer: Option D D. 9.0μF Explanation C = C1 + C2…

6 years ago

Which of the following factors does not affect the capacitance of a parallel plate capacitor?

A. area of the plates B. nature of the surface of the plates C. distance of separation between the plates…

6 years ago

The acceleration due to gravity may be defined as the force?

A. of attraction of the sun and on the earth B. with which the earth revolves around the sun C.…

6 years ago

Which of the following actions is necessary in order to tune a string to produce a note of an octave higher than its fundamentals?

A. doubling the length of the string B. reducing the tension by half C. reducing the mass per unit length…

6 years ago

In which of the following media would sound wave travel fastest?

A. wood B. water C. iron D. mercury Correct Answer: Option C C. iron

6 years ago