physics

A force of 200N acts between two objects at a certain distance apart. The value of the force when the distance is halved is?A force of 200N acts between two objects at a certain distance apart. The value of the force when the distance is halved is?

A force of 200N acts between two objects at a certain distance apart. The value of the force when the distance is halved is?

A. 400N B. 200N C. 100N D. 800N Correct Answer: Option D - 800N

4 years ago
The velocity of sound in air will be doubled if it’s absolute temperature is?The velocity of sound in air will be doubled if it’s absolute temperature is?

The velocity of sound in air will be doubled if it’s absolute temperature is?

A. Quadrupled B. Constant C. Halved D. Doubled Correct Answer: Option A - Quadrupled

4 years ago
If the distance between two point charges its increased by a factor of four; the magnitude of the electrostatic force between them will be?If the distance between two point charges its increased by a factor of four; the magnitude of the electrostatic force between them will be?

If the distance between two point charges its increased by a factor of four; the magnitude of the electrostatic force between them will be?

A. 1/4 of its former value B. 1/16 of its former value C. 1/2 of its former value D. 4…

4 years ago
Two liquids L1 and L2 are contained in a U – tube. The height and the density of L1 are 8 cm and 10³ kgm−³ respectively. If the density of L2 is 800 kgm−³, its height measured from the same level isTwo liquids L1 and L2 are contained in a U – tube. The height and the density of L1 are 8 cm and 10³ kgm−³ respectively. If the density of L2 is 800 kgm−³, its height measured from the same level is

Two liquids L1 and L2 are contained in a U – tube. The height and the density of L1 are 8 cm and 10³ kgm−³ respectively. If the density of L2 is 800 kgm−³, its height measured from the same level is

A. 8 cm B. 10 cm C. 16 cm D. 12 cm Correct Answer: Option B = 10 cm Explanation…

4 years ago
Which of the following statements is true of the charge?Which of the following statements is true of the charge?

Which of the following statements is true of the charge?

Two charged particles are projected into a region where there is a magnetic field perpendicular to their velocities. if the…

4 years ago
The electric field intensity in a place where a charge of 10^-10C experiences a force of 0.4N is?The electric field intensity in a place where a charge of 10^-10C experiences a force of 0.4N is?

The electric field intensity in a place where a charge of 10^-10C experiences a force of 0.4N is?

A. 4.0 x 107 NC-1 B. 8.0 x 109 NC-1 C. 8.O x 10-12 NC-1 D. 4.0 x 109 NC-1 Correct Answer: Option D…

4 years ago
A car battery rated 45 A H is charged with a charger whose rating is 2.5A. How long will it take to charge the battery full?A car battery rated 45 A H is charged with a charger whose rating is 2.5A. How long will it take to charge the battery full?

A car battery rated 45 A H is charged with a charger whose rating is 2.5A. How long will it take to charge the battery full?

A. 10 hrs B. 18 hrs C. 20 hrs D. 25 hrs Correct Answer: Option B - 18 hrs Explanation…

4 years ago
The north pole of a magnet can never be separated from the south pole because of the property knowledge as?The north pole of a magnet can never be separated from the south pole because of the property knowledge as?

The north pole of a magnet can never be separated from the south pole because of the property knowledge as?

A. magnetic octopole B. magnetic monopole C. magnetic dipole D. magnetic quadrupole Correct Answer: Option C - magnetic dipole

4 years ago
An electric device is rated 2000W; 250V. The correct fuse rating of the device is?An electric device is rated 2000W; 250V. The correct fuse rating of the device is?

An electric device is rated 2000W; 250V. The correct fuse rating of the device is?

A. 9 A B. 8 A C. 6 A D. 7 A Correct Answer: Option B - 8 A Explanation…

4 years ago
Satellite communication network makes use of?Satellite communication network makes use of?

Satellite communication network makes use of?

A. visible light B. sound wave C. radio wave D. infra-red wave Correct Answer: Option C - radio wave

4 years ago
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