List of practice Questions

The value of \(R\) in the given circuit, so that there is no current flow in the \(10\,\Omega\) resistor, will be

Light is incident on an interface between water (refractive index \(=1.33\)) and glass (refractive index \(=1.5\)). For total internal reflection, light should be travelling from \[ (i_c \text{ is the critical angle}) \]

Arrange the following in increasing order of focal length of a given lens. (A) \(f_V\) -- focal length for violet colour (B) \(f_B\) -- focal length for blue colour (C) \(f_Y\) -- focal length for yellow colour (D) \(f_R\) -- focal length for red colour Choose the correct answer from the options given below:

A horizontal wire of length \(10\,\text{cm}\) and mass \(0.3\,\text{g}\) carries a current of \(5\,\text{A}\). The magnitude of the magnetic field which can keep the wire in suspension is \[ (g=10\,\text{m s}^{-2}) \]

An alternating current is given by the equation \[ i=i_1\sin\omega t+i_2\cos\omega t \] The \(i_{\mathrm{rms}}\) will be:

According to Bohr's model of the hydrogen atom, (A) the radius of the orbit of an electron is directly proportional to \(n\). (B) the speed of the orbiting electron is directly proportional to \(\dfrac{1}{n}\). (C) the total energy of the electron is directly proportional to \(\dfrac{1}{n^2}\). (D) the radius of the orbit of an electron is directly proportional to \(n^2\). Choose the correct answer from the options given below:

Match List-I with List-II (Symbols have their usual meanings).

Choose the correct answer from the options given below:

The figure below shows an equiconvex lens \((n = 1.5)\) placed in contact with a thin liquid layer resting on a plane mirror. A small needle, with its tip positioned on the principal axis of the lens, is moved along the axis until its inverted image coincides with the needle tip itself. When the liquid is present, the distance between the needle and the lens is found to be \(50\,\text{cm}\). The experiment is then repeated after removing the liquid, and the distance is observed to be \(35\,\text{cm}\). The refractive index of the liquid is

Below is given sentence in active/passive voice. Out of the four alternative suggested, select one which best expresses the same sentence in passive/active voice:
"The waiter filled the glasses with water."

Arrange the following major ideas from the passage in the most logical order for writing a coherent précis:

• [(K)] Disarmament assumes overriding importance despite continued arms competition.

• [(L)] The nuclear age presents humanity with only two alternatives: annihilation or peaceful co-existence.

• [(M)] Achieving peace requires cultivating tolerance and reshaping policies.

• [(N)] Immediate and serious action is necessary as delay is dangerous.

• [(O)] The United Nations bears the primary responsibility for ensuring progress toward disarmament.

Choose the correct complex sentence from the options given below:
"My brother gave me a watch and I have lost it."

Choose the correct answer from the options given below the sentence:
When the principal entered the class, a student on the blackboard.

Fill in the blanks with suitable preposition:
"The dog is lying the floor."

Choose the correct answer from the options given below the sentence:
He always to prove that the earth revolves around the sun.

Below is given sentence in active/passive voice. Out of the four alternative suggested, select one which best expresses the same sentence in passive/active voice:
"The waiter filled the glasses with water."

Change the following sentence from the active voice to the passive voice-
"The peon opened the gate."

Choose the prefix for the word 'Possible' to make it opposite:

Direction - For the below Assertion [As] and Reason [R], choose the correct alternative-
Assertion [As] : It was not possible to "linger on the expedition".
Reason [R] : Once the tide turned, it came in rapidly and could cut off the return path.

प्लुत स्वर के संबंध में सही कथन चुनिए:

• [(J)] इसका कोई चिह्न नहीं होता।

• [(K)] हिन्दी में सामान्यतः इसका प्रयोग नहीं होता।

• [(L)] वैदिक भाषा में इसका प्रयोग अधिक हुआ है।

• [(M)] इसे ' एकमात्रिक' स्वर भी कहते हैं।

सुमेल कीजिए:
tabularll (a) प्रत्येक & (I) तत्पुरुष
(b) हथकड़ी & (II) द्वंद्व
(c) मुनिवर & (III) अव्ययीभाव
(d) हरिहर & (IV) कर्मधारय
tabular

Assertion Reason question:
Assertion (As): द्विगुण व्यंजन शब्द की शुरुआत में नहीं आते।
Reason (R): ये केवल शब्द के मध्य या अंत में प्रयुक्त होते हैं।

Vocational interest mainly develops during which stage?

Why is adaptation necessary in inclusive classrooms? (J) To consider different learning styles. (K) To ensure participation of all students. (L) To provide equal learning opportunities. (M) To improve only examination results.

Which of the following should a teacher focus on in the classroom? (K) One-way communication. (L) Intercultural harmony. (M) Feedback from students. (N) Creating a flexible atmosphere. (O) Avoiding giving advice.

कारक विश्लेषण तालिका के अनुसार निम्नलिखित कारकों को उनके सही व्याकरणिक क्रम में व्यवस्थित करें:
(K) अधिकरण
(L) करण
(M) संप्रदान
(N) अपादान
(O) संबंध