ISC 2022 Physics - Specimen paper (Semester 1), Paper 1 with Answers
All 50 questions of the ISC 2022 Physics - Specimen paper (Semester 1), Paper 1, in printed order. Open a question to read it in full and see its answer.
- Q1 The ratio of forces between two small spheres having a constant charge ‘q’ when placed in air to when placed in a medium of… 1 mark · MCQ
- Q2 When a soap bubble is given a positive charge, then its radius: 1 mark · MCQ
- Q3 Four charges are arranged at the corners of a square ABCD , as shown in the adjoining figure. The force on the charge ‘Q’ kept at… 1 mark · MCQ
- Q4 The surface charge density of a conductor, in the absence of another conductor: 1 mark · MCQ
- Q5 Which of the following is not the characteristic of resonance in an LCR series circuit? 1 mark · MCQ
- Q6 A graph showing variation in impedance Z of a series LCR circuit, with frequency f of alternating emf applied to it is shown… 1 mark · MCQ
- Q7 An electric dipole of moment $\vec{p}$ is placed in a uniform electric field $\vec{E}$. It has maximum (negative) potential… 1 mark · MCQ
- Q8 A charge placed at a distance from a short electric dipole in the end-on position experiences a force F. If the distance is… 1 mark · MCQ
- Q9 In figure 3 given below, Electric field intensity ‘E’ at a point P, at a perpendicular distance ‘r’ from an infinitely long line… 1 mark · MCQ
- Q10 Three capacitors, each of capacitance C, are connected in series. Their equivalent capacitance is Cs. The same three capacitors… 1 mark · MCQ
- Q11 The charges $q_1 = 3\ \mu\text{F}$, $q_2 = 4\ \mu\text{F}$ and $q_3 = -7\ \mu\text{F}$ are placed on the circumference of a… 1 mark · MCQ
- Q12 Three equal charges of $5.0\ \mu\text{C}$ each, are placed at the three vertices of an equilateral triangle of side… 1 mark · MCQ
- Q13 Three capacitors $C_1 = 3\ \mu\text{F}$, $C_2 = 6\ \mu\text{F}$ and $C_3 = 10\ \mu\text{F}$ are connected to a $50\text{ V}$… 1 mark · MCQ
- Q14 A substance behaves like a magnet only if there are: 1 mark · MCQ
- Q15 A straight long wire is turned into a loop of radius $R = 10\text{ cm}$, as shown in figure 6 below. If a current… 1 mark · MCQ
- Q16 The current in the circuit shown in figure 7 below, will be: 1 mark · MCQ
- Q17 A cell of e.m.f. E is connected to an external resistance R. The potential difference across cell is V. The internal resistance… 1 mark · MCQ
- Q18 The figure 8 given below shows currents in a part of an electric circuit. The current i is: 1 mark · MCQ
- Q19 n identical cells each of e.m.f. E and internal resistance r are connected in parallel. An external resistance R is connected in… 1 mark · MCQ
- Q20 The circuit shown in figure 9 below is used to compare the e.m.f. of two cells $E_1$ and $E_2$ where $E_2 > E_1$. The null point… 1 mark · MCQ
- Q21 Figure 10 given below shows a graph of emf ‘ε’ generated by an ac generator verses time. What is the frequency of the emf? 1 mark · MCQ
- Q22 If m, e, $\tau$ and n respectively represent the mass, charge, average relaxation time and density of the electron, then what… 1 mark · MCQ
- Q23 The drift velocity of a current carrying conductor is v. What will be the drift velocity if the current flowing through the wire… 1 mark · MCQ
- Q24 The resistance of a wire is $10\ \Omega$. It is stretched so that its length becomes four times. What will be the new resistance… 1 mark · MCQ
- Q25 What is the angle between the current element $d\vec{l}$ and the magnetic flux density $\vec{B}$ at point P’ in the figure 11… 1 mark · MCQ
- Q26 An A.C. generator generating an e.m.f of $\varepsilon = 300 \sin (100\pi) t$ is connected to a series combination of… 1 mark · MCQ
- Q27 Four identical cells each having an e.m.f. of 4V are connected in parallel. What will be the e.m.f. of this combination? 1 mark · MCQ
- Q28 A 2 volt battery, a $15\ \Omega$ resistor and a potentiometer of 100 cm length, all are connected in series. If the resistance of… 1 mark · MCQ
- Q29 The potential gradient along the length of a uniform wire is 20 volt/metre. B and C are the two points at 40cm and 70cm point on… 1 mark · MCQ
- Q30 In an experiment of meter bridge, a null point is obtained at the centre of the bridge wire. When a resistance of 5 is connected… 1 mark · MCQ
- Q31 What is the locus of an electron, projected perpendicular to a uniform magnetic field? 1 mark · MCQ
- Q32 Which of the following is the right expression to define the magnetic field B? 1 mark · MCQ
- Q33 What is the SI (base unit) unit of permeability? 1 mark · MCQ
- Q34 The loss of power in a transformer can be reduced by: 1 mark · MCQ
- Q35 Which is the most harmful radiation entering the atmosphere of earth from outer space? 1 mark · MCQ
- Q36 Radio waves and gamma waves are both transverse in nature and electromagnetic in character and have the same speed in vacuum. In… 1 mark · MCQ
- Q37 Which of the following groups belongs only to the electromagnetic spectrum? 1 mark · MCQ
- Q38 Which electromagnetic radiation has wavelength greater than that of X-rays and smaller than that of visible light? 1 mark · MCQ
- Q39 A parallel plate capacitor of plate area $A = 600\text{ cm}^2$ and plate separation $d = 2.0\text{ mm}$ is connected to a dc… 2 marks · Short answer
- Q40 A torch bulb rated as 4.5 W, 1.5 V is connected as shown in figure 12 given below. What should be the e.m.f. of the cell required… 2 marks · Short answer
- Q41 The specific resistance of manganin is $50 \times 10^{-8}\ \Omega\text{ m}$. The resistance of a cube of length 50m will be: The… 2 marks · Short answer
- Q42 A metallic rod CD rests on a thick metallic wire PQRS with arms PQ and RS parallel to each other, at a distance… 2 marks · Short answer
- Q43 Study the diagram given below: The direction of the current at end ‘P’ will be: The magnetic poles induced at the end ‘Q’ of the… 2 marks · Short answer
- Q44 The resistance of a galvanometer is $50\ \Omega$. It is converted into a voltmeter or an ammeter. Calculate the resistance of the… 2 marks · Short answer
- Q45 Two bulbs B1 and B2 are connected in series with an source of emf 250V as shown in the figure 15 below. The labels on the bulbs… 3 marks · Short answer
- Q46 A $2\ \mu\text{F}$ capacitor, $100\ \Omega$ resistor and $8\text{ H}$ inductor are connected in series with an ac source. At a… 3 marks · Short answer
- Q47 Given below is a neat, labelled diagram to obtain balancing condition of Wheatstone bridge. Why is the key ‘K’ pressed before the… 3 marks · Short answer
- Q48 Figure 17 shows a right-angled isosceles triangle PQR having its base equal to ‘a’. A current of 1.0 A is passing downwards along… 3 marks · Short answer
- Q49 An alternating e.m.f of 100V is applied to a circuit containing a resistance of $40\ \Omega$ and an inductance L in series. The… 4 marks · Short answer
- Q50 The teacher of Priti's school took the students on a study trip to a power generating station, located nearly 250 km away from… 4 marks · Short answer