JEE Main Test 86

Result

JEE Main Test 86

Score
-
out of -
Rank
-
out of -

TIME Taken - -

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Weekly Quiz Competition

Question 1
4 / -1

Which one of the following is possible

A

B

C
tanθ = 45

D

Solution
Question 2
4 / -1

A sound absorber attenuates the sound level by 20 dB. The intensity decreases by a factor of

A
1000

B
10000

C
10

D
100

Solution
Question 3
4 / -1

The greatest and least values of (sin^-1χ )² + (cos^-1χ)² are respectively

A

B

C

D

Solution
Question 4
4 / -1

Two thin wire rings each having a radius R are placed at a distance d apart with their axes coinciding. The charges on the two rings are + q and –q. The potential difference between the centres of the two rings is

A

B

C
zero

D

Solution
Question 5
4 / -1

A battery of emf 2.0 V and internal resistance 0.10 Ω is being charged with a current of 5.0 A. The potential difference between the terminals of the battery is

A
2.0 V

B
2.5 V

C
1.5 V

D
zero

Solution
Question 6
4 / -1

What is the potential difference between points A and B in the circuit shown?

A
2 V

B
4 V

C
3 V

D
12 V

Solution
Question 7
4 / -1

A step-down transformer reduces the voltage of a transmission line from 2200 V to 220 V. The power delivered by it is 880 W and its efficiency is 88%. The input current is

A
4.65 mA

B
0.045 A

C
0.45 A

D
4.65 A

Solution
Question 8
4 / -1

A boat is moving due East in a region where the earth's magnetic field is 5.0 × 10^-5 NA^-1 m^-1 due North and horizontal. The boat carries a vertical aerial 2 m long. If the speed of the boat is 1.50 ms^-1 , the magnitude of the induced emf in the wire of aerial is

A
0.75 mV

B
0.50 mV

C
0.15 mV

D
1 mV

Solution
Question 9
4 / -1

The equation of second degree x² + 2√2xy + 2 y² + 4x + 4√2y + 1 = 0 represents a pair of straight lines. The distance between them is

A
2√3

B
2√5

C
2

D
02010

Solution
Question 10
4 / -1

A square loop of wire, side length 10 cm is placed at angle of 45° with a magnetic field that changes uniformly from 0.1 T to zero in 0.7 s. The induced current in the loop (its resistance is 1 Ω ) is

A
1.0 mA

B
2.5 mA

C
3.5 mA

D
4.0 mA

Solution