Relation between a wavelength of photon and electron of same energy is:
1. \( \lambda_{p h}>\lambda_e \)
2. \( \lambda_{p h}<\lambda_e \)
3. \( \lambda_{p h}=\lambda_e\)
4. \(\frac{\lambda_e}{\lambda_{p h}}=\text { constant }\)
Match the following.
A. | Angular momentum | 1. | [M-1L2T-2] |
B. | Torque | 2. | [M1T-2] |
C. | Gravitational constant | 3. | [M1L2T-2] |
D. | Tension | 4. | [M1L2T-1] |
1. C-2, D-1
2. A-4, B-3
3. A-3, C-2
4. B-2, A-1
If we increase the kinetic energy of a body by 300%, then percent increase in its momentum is:
1. 50%
2. 300%
3. 100%
4. 150%
Change in acceleration due to gravity is same at height h above the Earth surface and depth \(x ,\) then relation between \(x\) and \(h\) is: (\(h\) and \(x<<R_e\))
1. \(x=h\)
2. \(x=2h\)
3. \(x=\frac h2\)
4. \(x=h^2\)
A mass of \(1~\mathrm{kg}\) is suspended from a spring of force constant \(400\) N, executing SHM total energy of the body is \(2\) J, then the maximum acceleration of the spring will be:
1. \(
4 \mathrm{~m} / \mathrm{s}^2
\)
2. \( 40 \mathrm{~m} / \mathrm{s}^2
\)
3. \( 200 \mathrm{~m} / \mathrm{s}^2
\)
4. \( 400 \mathrm{~m} / \mathrm{s}^2\)
Two capacitors of capacities \(C_1\) and \(C_2\) are charged upto the potential \(V_1\) and \(V_2,\) then the condition for not flowing the charge between them when connected the capacitors, in parallel is:
1. \(C_1=C_2\)
2. \(C_1V_1=C_2V_2\)
3. \(V_1V_2\)
4. \(\frac{C_1}{V_1}=\frac{C_2}{V_2}\)
Find equivalent resistance between \(X\) and \(Y\):
1. \(R\)
2. \(R/L\)
3. \(2R\)
4. \(5R\)
Vibrations of rope tied by two rigid ends shown by equation \(y=cos2\pi t\sin2\pi x,\) then the minimum length of the rope will be:
1. \(1\) m
2. \(\frac12\) m
3. \(5\) m
4. \(2\pi\) m
If we change the value of \(R,\) then:
1. voltage does not change on \(L\)
2. voltage does not change on \(LC\) combination
3. voltage does not change on \(C\)
4. voltage changes on \(LC\) combination
If \(V=ar\) where \(a\) is a constant and \(r\) is the distance, then the electric field at a point will be proportional to:
1. \(r\)
2. \(r^{-1}\)
3. \(r^{-2}\)
4. \(r^{0}\)