Element X has atomic number more than 10 and less than 20. If an atom of element X has 6 electrons in its last orbit, then it will ______ to achieve the stable inert gas electron configuration.
When a 12 V battery is connected across an unknown resistor, a current of 2.5 mA flows in the circuit. Calculate the value of the resistance of the resistor.
An object is placed in front of a convex lens of 5 cm focal length such that a virtual image is formed at a distance of 25 cm from the lens. Find the magnification.
How can we connect three resistances of\[2\,\,\Omega \],\[3\,\,\Omega \] and \[6\,\,\Omega \] in a circuit to get an equivalent resistance of\[4\,\,\Omega \]?
A)
All the three resistances in parallel.
doneclear
B)
All the three resistances in series.
doneclear
C)
\[3\,\,\Omega \] resistance in series with parallel combination \[2\,\,\Omega \] and \[6\,\,\Omega \] resistances.
doneclear
D)
\[2\,\,\Omega \] resistance in series with parallel combination \[3\,\,\Omega \] and \[6\,\,\Omega \] resistances.
A wire of resistance R is cut into five equal parts. These five parts are then connected in parallel, if the equivalent resistance of this combination be \[{{R}_{1}},\] then calculate the ratio\[R/{{R}_{1}}\].
Electric supply of a house is through 15 A fuse. When a 2000 W heater is used in this house, how many 100 W bulbs can be used simultaneously? The supply is at 220 V and the heater and the bulbs are rated for 220 V.
Two buses start from the opposite points of a main road, 150 km apart. The first bus runs for 25 km and takes a right turn and then runs for 15 km. It then turns left and runs for another 25 km then it takes left again to reach the main road. In the meantime, due to a minor breakdown, the other bus has run only 35 km along the main road. What would be the distance between the two buses at this point?
If \['-'\] stands for 'division', '+' for 'multiplication',\['\div '\]for 'subtraction' and \['\times '\] for 'addition' then which one of the following equations is correct?
Among 6 persons, Ravi is elder than Mohan but younger than Rohit. Arpit is elder than only 1 person. Sachin is younger than Deepak, who is third eldest among them while Mohan is not the youngest. If they are arranged in descending order of their age then how many persons are there between Rohit and Sachin?
Direction (36 to 38): B, M, T, R, K, H and D are travelling in a train compartment with Ill tier sleeper berth. Each of them has a different profession of Engineer, Doctor, Architect, Pharmacist, Lawyer, Journalist and Pathologist. They occupied two lower berths, three middle berths and two upper berths. B, the Engineer, is not on upper berth. The Architect is the only other person who occupies the same type of berth as that of B. M and H are not on the middle berth and their professions are Pathologist and Lawyer, respectively. Tis a Pharmacist. D is neither a Journalist nor an Architect. K occupies the same type of berth as that of the Doctor.
Direction: B, M, T, R, K, H and D are travelling in a train compartment with Ill tier sleeper berth. Each of them has a different profession of Engineer, Doctor, Architect, Pharmacist, Lawyer, Journalist and Pathologist. They occupied two lower berths, three middle berths and two upper berths. B, the Engineer, is not on upper berth. The Architect is the only other person who occupies the same type of berth as that of B. M and H are not on the middle berth and their professions are Pathologist and Lawyer, respectively. Tis a Pharmacist. D is neither a Journalist nor an Architect. K occupies the same type of berth as that of the Doctor.
Direction: B, M, T, R, K, H and D are travelling in a train compartment with Ill tier sleeper berth. Each of them has a different profession of Engineer, Doctor, Architect, Pharmacist, Lawyer, Journalist and Pathologist. They occupied two lower berths, three middle berths and two upper berths. B, the Engineer, is not on upper berth. The Architect is the only other person who occupies the same type of berth as that of B. M and H are not on the middle berth and their professions are Pathologist and Lawyer, respectively. Tis a Pharmacist. D is neither a Journalist nor an Architect. K occupies the same type of berth as that of the Doctor.
Which of the following pairs occupy the lower berth?
Fill in the blanks with correct combination of words.
The \[\underline{\,\,\,L\,\,\,}\] from both sides join near the base of the\[\underline{\,\,\,M\,\,\,}\]opening into a single tube called\[\underline{\,\,\,N\,\,\,}\]. This junction occurs \[\underline{\,\,\,O\,\,\,}\]and\[\underline{\,\,\,P\,\,\,}\].
Fill in the blanks with correct combination of terms.
If an object is placed at a distance of \[\underline{\,\,L\,\,}\]in front of a \[\underline{\,\,M\,\,}\] mirror of focal length\[\underline{\,\,N\,\,}\], a \[\underline{\,\,O\,\,}\] image is produced which is \[\underline{\,\,P\,\,}\] the size of the object.
A)
L-10 cm, M-concave, N-30 cm, O-virtual, P-twice
doneclear
B)
L-10 cm, M-concave, N-20 cm, O-real, P -twice
doneclear
C)
L-10 cm, M-concave, N-20 cm, O-virtual, P- twice
doneclear
D)
L-10 cm, M-concave, N-20 cm, O-virtual, P-equal to