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Content Curator | Updated On - Jul 8, 2024
WBJEE 2018 Question Paper is provided here below. The exam was deemed as being moderate in terms of difficulty level with Mathematics and Chemistry sections being comparatively easy as compared to Physics.
WBJEE 2018 Question Paper with Answer Key PDFs
WBJEE 2018 Exam Date | WBJEE 2018 Paper | WBJEE 2018 Question Paper |
---|---|---|
April 22, 2018 | Mathematics | Check Here |
Physics & Chemistry | Check Here |
WBJEE 2018 Questions
1. The function \(y=e^{kr}\) satisfies \((\frac{d^2y}{dx^2}+\frac{dy}{dx})(\frac{dy}{dx}-y)=y\frac{dy}{dx}\). It is valid for
The function \(y=e^{kr}\) satisfies \((\frac{d^2y}{dx^2}+\frac{dy}{dx})(\frac{dy}{dx}-y)=y\frac{dy}{dx}\). It is valid for
- exactly one value of k
- two distinct values of k
- three distinct values of k
- infinitely many values of k
2. If 4a2+9b2-c2+12ab=0, then the family of straight lines ax+by+c=0 is concurrent at
If 4a2+9b2-c2+12ab=0, then the family of straight lines ax+by+c=0 is concurrent at
- (2,3)or(-2,-3)
- (-2,3)or(2,-3)
- (3,2)or(-3,2)
- (-3,2)or(2,3)
3. The value of 'a' for which the scaler triple product formed by the vectors \(\vec\alpha=\hat{i}+a\hat{j}+\hat{k}\), \(\vec{\beta}=\hat{j}+a\hat{k}\) and \(\vec{\gamma}=a\hat{i}+\hat{k}\) is maximum, is
The value of 'a' for which the scaler triple product formed by the vectors \(\vec\alpha=\hat{i}+a\hat{j}+\hat{k}\), \(\vec{\beta}=\hat{j}+a\hat{k}\) and \(\vec{\gamma}=a\hat{i}+\hat{k}\) is maximum, is
- 3
- -3
- \(\frac{1}{\sqrt3}\)
- \(-\frac{1}{\sqrt3}\)
4. An electric dipole of dipole moment p is placed at the origin of the coordinate system along the z-axis. The amount of work required to move a charge 'q' from the point (a,0,0) to the point (0,0,a) is
An electric dipole of dipole moment p is placed at the origin of the coordinate system along the z-axis. The amount of work required to move a charge 'q' from the point (a,0,0) to the point (0,0,a) is
- \(\frac{pq}{4\pi\epsilon_0a}\)
- 0
- \(-\frac{pq}{4\pi\epsilon_0a^2}\)
- \(\frac{pq}{4\pi\epsilon_0a^2}\)
5. A train is moving along the tracks at a constant speed u. A girl on the train throws a ball of mass m straight ahead along the direction of motion of the train with speed v with respect to herself. Then,
A train is moving along the tracks at a constant speed u. A girl on the train throws a ball of mass m straight ahead along the direction of motion of the train with speed v with respect to herself. Then,
*The article might have information for the previous academic years, which will be updated soon subject to the notification issued by the University/College.
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