JEE Main Test 128

Result

JEE Main Test 128

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

If sin A, sin B and cos A are in GP, then the roots of χ² + 2χ cot B + 1 = 0 are always

A
real

B
imaginary

C
greater than 1

D
equal

Solution
Question 2
4 / -1

Two masses M and M/2 are joined together by means of light inextensible string passed over a frictionless pulley as shown in the figure. When the bigger mass is released, the small one will ascend with an acceleration of

A
g/3

B
3g/2

C
g/2

D
g

Solution
Question 3
4 / -1

The work done by a force acting on a body is as shown in the graph. The total work done in covering an initial distance of 20 m is

A
225 J

B
200 J

C
400 J

D
175 J

Solution
Question 4
4 / -1

The sum of the integers from 1 to 100 which are divisible by 3 and 5, is

A
2317

B
2632

C
315

D
2489

Solution
Question 5
4 / -1

The value of 2^1/4 . 4^1/8. 8^1/16 ... ∞ is

A
1

B
2

C
3/2

D
4

Solution
Question 6
4 / -1

The wavelength X. = 5.5 × 10^-7m when temperature of the sun is 5500 K. If the furnace has wavelength λ_m equal to 1 is 10^-7m, then temperature of furnace is

A
5000 K

B
1750 K

C
3750 K

D
2750 K

Solution
Question 7
4 / -1

The amount of heat energy radiated by a metal at temperature T is E . When the temperature is increased to 3 T , energy radiated is

A
81 E

B
9 E

C
3 E

D
27 E

Solution
Question 8
4 / -1

A ball is made of a material of density ρ where ρ_oil <ρ < ρ_water with ρ_oil and ρ_water representing the densities of oil and water respectively. The oil and water are immiscible. If the above ball is in equilibrium in a mixture of this oil and water, which of the following pictures represents its equilibrium position?

A

B

C

D

Solution

Option (2) is correct.

Because, the oil is less dense than water.The molecules that make up the oil are larger than those that make up water. So, they cannot pack as tightly together as the water molecules. They take up more space per unit area and are less dense. So,it will sink through oil but will not sink in water.
Question 9
4 / -1

The remainder left out when 8²ⁿ – (62)²ⁿ⁺¹ is divided by 9, is

A
0

B
2

C
7

D
8

Solution
Question 10
4 / -1

A
372 K and 330 K

B
330 K and 268 K

C
310 K and 248 K

D
372 K and 310 K

Solution