Q73. lim (1−cos2x)(3+cosx)xtan4x = x→0 (1) 12 (2) 4 (3) 3 (4) 2
What This Question Tests
This question tests the ability to evaluate a limit by applying standard trigonometric limit forms and identities to simplify the expression before direct substitution.
Concepts Tested
Formulas Used
lim (sin x)/x = 1
lim (1-cos x)/x^2 = 1/2
1-cos2x = 2sin^2x
📚 NCERT Sections This Tests
12.5 — A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,
Physics Class 12 · Chapter 12
12.5 A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of photon.
1.3 — Define The Following Terms:
Chemistry Class 11 · Chapter 1
1.3 Define the following terms: (i) Mole fraction (ii) Molality (iii) Molarity (iv) Mass percentage.
12.4 — The Ground State Energy Of Hydrogen Atom Is –13.6 Ev. What Are The
Physics Class 12 · Chapter 12
12.4 The ground state energy of hydrogen atom is –13.6 eV. What are the kinetic and potential energies of the electron in this state?
📋 Question Details
- Chapter
- Limits & Continuity
- Topic
- Evaluation of limits
- Year
- 2015
- Shift
- 04 Apr
- Q Number
- Q73
- Type
- MCQ
- NCERT Ref
- Class 11 Mathematics Ch 13: Limits and Derivatives
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