Popular Categories
Jewellers
Traders
Laboratories
Tertiary Sector
Hotels
Service Provider
Beauty Spa
Aerospace Industries
Home Decor
Manufacturing Industries
Education
Salon
Food And Dining
Healthcare industry
Food industry
Agriculture

JEE Exam

1. A car accelerates uniformly from rest to 20 m/s in 5 sec. The distance covered in the 3rd second is:
  • 16 m
  • 14 m
  • 12 m
  • 10 m
2. A block of mass 2 kg slides down a 30° incline with μ = 0.5. Its acceleration is:
  • 5.8 m/s25.8m/s2
  • 3.3 m/s23.3m/s2
  • 1.5 m/s21.5m/s2
  • 0.66 m/s20.66m/s2
3. The angular momentum of a particle moving in a circle is conserved if:
  • Torque is zero
  • Force is radial
  • Both (A) and (B)
  • None
4. Two capacitors C1=2μFC1=2μF and C2=4μFC2=4μF are charged to 100V and 200V respectively. When connected in parallel, the energy loss is:
  • 0.08 J
  • 0.02 J
  • 0.04 J
  • 0.01 J
5. A wire of resistance RR is bent into a circle. The resistance between two diametrically opposite points is:
  • 2R2R
  • RR
  • R/2R/2
  • R/4R/4
6. A proton enters a magnetic field at 30° with velocity vv. Its path is:
  • Helical
  • Parabolic
  • Circular
  • Straight line
7. The de Broglie wavelength of an electron accelerated by 100V is:
  • 0.012 nm
  • 12.2 nm
  • 1.22 nm
  • 0.122 nm
8. In a nuclear reaction, the mass defect is 0.2 amu. The energy released is:
  • 200 MeV
  • 931 MeV
  • 186 MeV
  • 18.6 MeV
9. A photon of energy 4 eV is incident on a metal with work function 2 eV. The stopping potential is:
  • 0 V
  • 6 V
  • 4 V
  • 2 V
10. A light wave travels from air (μ=1μ=1) to glass (μ=1.5μ=1.5). The ratio of wavelengths in air and glass is:
  • 2:1
  • 1.5:1
  • 1:1.5
  • 1:1
11. In Young’s double-slit experiment, if the slit width ratio is 1:4, the intensity ratio of maxima to minima is:
  • 16:1
  • 25:9
  • 4:1
  • 9:1
12. A sound wave has a frequency of 1 kHz and wavelength 34 cm. The speed of sound is:
  • 0.34 m/s
  • 3.4 m/s
  • 34 m/s
  • 340 m/s
13. An ideal gas expands isothermally from volume V1V1 to V2V2. The work done is:
  • P(V2−V1)P(V2−V1)
  • Zero
  • nRT(V2−V1)nRT(V2−V1)
  • nRTln⁡(V2/V1)nRTln(V2/V1)
14. A simple pendulum has a period TT on Earth. On the Moon (gmoon=g/6gmoon=g/6), its period is:
  • 6T6T
  • 6T6T (Since T∝1/gT∝1/g)
  • T/6T/6
  • TT
15. For a cyclic process, which is always true?
  • ΔU=0ΔU=0
  • ΔQ=ΔWΔQ=ΔW
  • Both (A) and (B)
  • None
16. A solid sphere rolls without slipping on an inclined plane at 30°. Its acceleration is:
  • g33g
  • 2g332g
  • 5g775g
  • g22g
17. A disc of mass MM and radius RR rolls down a rough incline. If angular acceleration is αα, the torque is:
  • 12MR2α21MR2α
  • 2MR2α2MR2α
  • 32MR2α23MR2α
  • MR2αMR2α
18. A coil of 100 turns has a flux change from 0.1 Wb to 0.2 Wb in 0.1 sec. The induced EMF is:
  • 0.1 V
  • 1 V
  • 100 V
  • 10 V
19. A conducting rod of length ll moves perpendicular to a magnetic field BB with velocity vv. The induced EMF is:
  • Zero
  • BlvBlv
  • B2lvB2lv
  • BlvvBl
20. In a p-n junction diode, the barrier potential decreases with:
  • Reverse bias
  • Increase in doping
  • Decrease in temperature
  • Increase in temperature
21. The output of a logic gate is 1 only when all inputs are 0. The gate is:
  • NAND
  • NOR
  • OR
  • AND
22. The escape velocity from Earth is veve. If Earth’s mass becomes 4 times, the new escape velocity is:
  • 4ve4ve
  • ve22ve
  • 2ve2ve
  • veve
23. A satellite orbits Earth at height hh. If its kinetic energy is KK, its potential energy is:
  • 2K2K
  • −2K−2K
  • KK
  • −K−K
24. A liquid flows through a pipe of varying diameter. If the speed is vv at a point where diameter is dd, its speed where diameter is 2d2d is:
  • 4v4v
  • 2v2v
  • v22v
  • v44v
25. A cube of side aa floats in water with 50% submerged. The density of the cube is:
  • 250 kg/m3250kg/m3
  • 500 kg/m3500kg/m3
  • 750 kg/m3750kg/m3
  • 1000 kg/m31000kg/m3
26. A ray of light passes from glass (μ=1.5μ=1.5) to water (μ=1.33μ=1.33). The critical angle is:
  • 90∘90∘
  • sin⁡−1(0.50)sin−1(0.50)
  • sin⁡−1(0.67)sin−1(0.67)
  • sin⁡−1(0.89)sin−1(0.89)
27. A spring-mass system has a period TT. If the spring is cut into two equal parts and connected in parallel, the new period is:
  • 2T2T
  • T22
  • T22T
  • TT
28. A circular loop of radius R carries current I. The magnetic field at its center is doubled when:
  • I is doubled and R is halved
  • I is kept constant and R is halved
  • Both I and R are doubled
  • I is halved and R is doubled
29. In an LR circuit with L = 2H, the current reaches 50% of max value in 2s. The resistance is:
  • 4 Ω
  • 1.386 Ω
  • 0.693 Ω
  • 2 Ω
30. A biconvex lens (μ=1.5) has radii 20cm each. Its power is:
  • 15D
  • 10D
  • 5D
  • 20D
31. In YDSE, when sodium light (λ=589nm) is replaced by LED (λ=420nm), the fringe width:
  • Decreases by 30%
  • Becomes zero
  • Remains same
  • Increases by 30%
32. An electron in H-atom jumps from n=4 to n=2. The wavelength of emitted light is:
  • 656 nm
  • 410 nm
  • 434 nm
  • 486 nm
33. The rest mass energy of electron is 0.51 MeV. Its KE when moving at 0.6c is:
  • 0.51 MeV
  • 0.38 MeV
  • 0.25 MeV
  • 0.13 MeV
34. For diatomic gas undergoing adiabatic process, the ratio ΔU/ΔW is:
  • 1
  • 2/5
  • -1
  • 5/2
35. Carnot engine works between 227°C and 27°C. Its efficiency is:
  • 80%
  • 40%
  • 60%
  • 20%
36. A particle moves along x-axis with velocity v = 3√x. Its acceleration at x=4m is:
  • 6 m/s²
  • 4.5 m/s²
  • 3 m/s²
  • 1.5 m/s²
37. A solid cylinder rolls up an incline at 30° with v=5m/s. The height reached is:
  • 2.50 m
  • 1.91 m
  • 1.25 m
  • 0.75 m
38. For Si diode, the barrier potential at 300K is 0.7V. When temperature increases by 10°C, the new barrier potential is:
  • 0.65 V
  • 0.70 V
  • 0.72 V
  • 0.68 V
39. In CE transistor amplifier, the phase difference between input and output is:
  • 0°
  • 90°
  • 180°
  • 270°
40. Three charges q, q, -q are placed at vertices of equilateral triangle. The dipole moment is:
  • √3ql
  • 2ql
  • √2ql
  • ql
41. A capacitor is charged to 100V and disconnected. When dielectric (K=2) is inserted, the new voltage is:
  • 25V
  • 200V
  • 100V
  • 50V
42. A standing wave has 3 nodes and 2 antinodes. The harmonic is:
  • 4th
  • 3rd
  • 2nd
  • Fundamental
43. The intensity level of sound increases by 10 dB when intensity increases by factor:
  • 1000
  • 100
  • 10
  • 1
44. In a meter bridge experiment, the balancing length is 40cm. The unknown resistance is:
  • 0.67Ω
  • 2/3Ω
  • 3Ω
  • 1.5Ω
45. The vernier constant of a caliper with 9 main scale divisions = 10 vernier divisions is:
  • 1 mm
  • 0.1 mm
  • 0.05 mm
  • 0.01 mm
46. The ratio of de Broglie wavelengths of proton (1 GeV) and electron (1 MeV) is:
  • 1/√2
  • 1/2
  • √2
  • 1
47. In nuclear fusion, if mass defect is 0.5%, the energy released from 1kg is:
  • 3.6×10¹⁴ J
  • 1.8×10¹⁴ J
  • 9×10¹³ J
  • 4.5×10¹³ J
48. A particle executes SHM with x = Asin(ωt + π/6). The time to reach x=A/2 from t=0 is:
  • π/6ω
  • π/ω
  • π/2ω
  • π/3ω
49. When light travels from medium A to B, its wavelength triples. The ratio μA/μB is:
  • 9
  • 1/9
  • 3
  • 1/3
50. The dimensional formula of Planck’s constant is
  • [ML²T ¹]
  • [ML²T⁻²]
  • [MLT⁻²]
  • [ML²T⁻¹]
Subscribe Now

Get All Updates & Advance Offers

Popular Categories

Steel Manufacturing Industries Plastic Manufacturing Industries Heritage Hotels 3 Star Hotels 5 Star Hotels Beauty Spa Home Decoration Plant Decoration Oils Manufacturing Waterjet and Laser Cutting Industries Calibration Instruments Manufacturing Staffing Solutions Rubber Manufacturing Agriculture Components Manufacturing Process Control Instruments Manufacturing Fiber Glass Product Manufacturing Wooden Die Manufacturing Chemical Manufacturing Company Restaurants/Cafe Food And Dining Hotels School/Play Center College/Institute Academy/Tuition Classes Hair Salon Pharmaceutical Manufacturing Industry Research and Analytical Laboratories Medical laboratory Real Estate IT Services and Solutions Hospital Aerospace Construction Food Product Telecommunication Services Provider Agriculture Food and Catering Services Professional Artists Numerologist Chartered Accountants Resorts Cloth Manufacturing Gold Jewellery Event Management Company Tour and travel agency Gym Fashion Design Diamond Tiffin Services Sweet And Farsan Photography Transportation And Logistics Banquet Hall Bakery Music Recording Studio General Traders Electronics Shop LED Manufacturing

Explore Listy X Collections

5 Star Hotels Academy/Tuition Classes Resorts Bakery Banquet Hall Cloth Manufacturing Diamond Electronics Shop Event Management Company Fashion Design Food And Dining General Traders Gold Jewellery Gym Heritage Hotels Food And Dining Hotels Hotels Jewellers LED Manufacturing Manufacturing Industries Music Recording Studio Numerologist Pharmaceutical Manufacturing Industry Photography Plastic Industries Professional Artists Restaurants/Cafe Salon Sweet And Farsan Tiffin Services Tool Steels Manufacturing Traders Transportation And Logistics

Popular Cities

Agar Ahmedabad Ahmednagar Akola Alirajpur Amreli Anand Ankleshwar Aravali Aurangabad Banaskantha Banglore Barwani Betul Bharuch Bhavnagar Bhind Bhiwandi Bhopal Bilpura Bombay Botad Chandrapur chennai Chhatarpur Chhota Udaipur Damoh Dangs Dewas Dohad Dwarka Gandhinagar Gir Somnath Gondia Gwalior Hyderabad Indore Itarsi Jabalpur Jalgaon Jamnagar Junagadh Kachchh Katni Khandwa Kheda Kolhapur Kolkata Latur Mahisagar Mandsaur Mehsana Morbi Morena Mumbai Nagpur Nanded Narmada Narmadapuram Nashik Navsari Neemuch Osmanabad PanchMahal Panna Parbhani Patan Pithampur Porbandar Pune Raigad Raisen Rajkot Ratlam Ratnagiri Rewa Sabarkantha Satara Satna Sehore Shajapur Sheopur Shivpuri Sindhudurg Solapur Surat Surendranagar Tapi Thane Ujjain Vadodara Valsad Vapi Washim Yavatmal