AIEEE Physics Test 2

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Person

Correct	Answer Text
	chromatic aberration
	astigmatism
	invisibility
	spherical aberration

Correct	Answer Text
	9%
	4%
	6%
	7%

The heat generated in a circuit depend upon the resistance. Current and time for which the current is flown. If the errors in measuring the above are as 1%, 2% and 1%, then maximum error in measuring heat will be

Answers

Correct	Answer Text
	3%
	2%
	5%
	6%

Question

A semi conducting device is connected in a series circuit with a battery and a resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed the current drops to almost zero the device may be

Answers

Correct	Answer Text
	a p-n junction
	a p-type semi-conductor
	an n-type semi-conductor
	an intrinsic semi-conductor

Question

The length, width the thickness of a block are $(100.0\pm 0.1)$ cm, $(10.00\pm 0.01)$ cm and $(1.000\pm 0.001)$ cm respectively. The most probable error in its volume will be

Answers

Correct	Answer Text
	$\pm 0.111cm^3$
	$\pm 0.012cm^3$
	$\pm 0.03cm^3$
	None of the above

Question

The length of a strip is measured with metre rod is 10.0 cm. Its width measured with vernier callipers is 1.00 cm. The least count of metre rod is 0.1 cm and that of vernier callipers 0.01 cm. What will be error in its area?

Answers

Correct	Answer Text
	$\pm 0.1 cm^2$
	$\pm 0.11 cm^2$
	$\pm 0.01 cm^2$
	$\pm 0.2 cm^2$

Question

If the radius of earth decrease by 1%, its mass remaining the same, the acceleration due to gravity on the surface will

Answers

Correct	Answer Text
	decrease by 1%
	increase by 1%
	increase by 2%
	decrease by 2%

Question

These is an air-filled 1pF parallel plate capacitor, when the plate separation is doubled and the space is filled with wax, the capacitance increases to 2pE. The dielectric constant of wax is

Answers

Correct	Answer Text
	2
	6
	4
	8

Question

Two wires of same length are shaped into a square and a circle. If they carry same currant ratio of the magnetic moments is:

Answers

Correct	Answer Text
	2 : $\pi$
	4 : $\pi$
	$\pi$ : 2
	$\pi$ : 4

Question

If a magnet is suspended at an angle $30^{\circ}$ to the magnetic meridian, the dip needle make an angle of $60^{\circ}$ with the horizontal. The true value of dip is

Answers