266612
The Young's modulus of a wire is numerically equal to the stress which will:
1 Not change the length of the wire
2 Double the length of the wire
3 Increase the length by \(50 \%\)
4 Change the area of cross-section of the wire to half
Explanation:
b Double the length of the wire
**NCERT-XI-II-169**
TEST SERIES (PHYSICS FST)
266636
A body of mass ' \(m\) ' is lifted from surface of earth to altitude \(h\). The increase in gravitational P.E. of the body will be:
1 \(\frac{m g h R}{h+R}\)
2 mgh approximately if \(h<
3 Both 1 and 2
4 None of the above
Explanation:
c
**NCERT-284**
TEST SERIES (PHYSICS FST)
266637
The quantity of heat which can rise the temperature of x gm of a substance through \(\mathrm{t}_1{ }^{\circ} \mathrm{C}\) can rise the temperature of ygm of water throguh \(t_2{ }^{\circ} \mathrm{C}\) is same. The ratio of specific heats of the substances is :-
1 \(\frac{y t_1}{x t_2}\)
2 \(\frac{x t_2}{y t_1}\)
3 \(\frac{y t_2}{x t_1}\)
4 \(\frac{\mathrm{xt}_2}{\mathrm{yt}}\)
Explanation:
c \[ \begin{aligned} & x c_1 t_1=y c_2 t_2 \\ & \frac{c_1}{c_2}=\frac{y t_2}{x t_1} \end{aligned} \]
**NCERT-282**
TEST SERIES (PHYSICS FST)
266638
A cup is full of water at \(4^{\circ} \mathrm{C}\) water will overflow from the cup if.
1 temp. is increased slightly
2 temp is decreased slightly
3 In both 1 and 2
4 none, water will not overflow
Explanation:
c kalume of water is minimum at \(4^{\circ} \mathrm{C}\) so it will fall in bothe cases
**NCERT-NLI-Exp**
TEST SERIES (PHYSICS FST)
266639
The blocks m , and \(\mathrm{m}_2\) are placed as shown in figure. A force \(\vec{F}\) is applied on block \(m_1\). Then which of following is correct
1 both \(\mathrm{m}_1\) and \(\mathrm{m}_2\) may remain at rest
2 both \(\mathrm{m}_1\) and \(\mathrm{m}_2\) will move with same acceleration
3 \(\mathrm{m}_1\) and \(\mathrm{m}_2\) will move with different accelerations
266612
The Young's modulus of a wire is numerically equal to the stress which will:
1 Not change the length of the wire
2 Double the length of the wire
3 Increase the length by \(50 \%\)
4 Change the area of cross-section of the wire to half
Explanation:
b Double the length of the wire
**NCERT-XI-II-169**
TEST SERIES (PHYSICS FST)
266636
A body of mass ' \(m\) ' is lifted from surface of earth to altitude \(h\). The increase in gravitational P.E. of the body will be:
1 \(\frac{m g h R}{h+R}\)
2 mgh approximately if \(h<
3 Both 1 and 2
4 None of the above
Explanation:
c
**NCERT-284**
TEST SERIES (PHYSICS FST)
266637
The quantity of heat which can rise the temperature of x gm of a substance through \(\mathrm{t}_1{ }^{\circ} \mathrm{C}\) can rise the temperature of ygm of water throguh \(t_2{ }^{\circ} \mathrm{C}\) is same. The ratio of specific heats of the substances is :-
1 \(\frac{y t_1}{x t_2}\)
2 \(\frac{x t_2}{y t_1}\)
3 \(\frac{y t_2}{x t_1}\)
4 \(\frac{\mathrm{xt}_2}{\mathrm{yt}}\)
Explanation:
c \[ \begin{aligned} & x c_1 t_1=y c_2 t_2 \\ & \frac{c_1}{c_2}=\frac{y t_2}{x t_1} \end{aligned} \]
**NCERT-282**
TEST SERIES (PHYSICS FST)
266638
A cup is full of water at \(4^{\circ} \mathrm{C}\) water will overflow from the cup if.
1 temp. is increased slightly
2 temp is decreased slightly
3 In both 1 and 2
4 none, water will not overflow
Explanation:
c kalume of water is minimum at \(4^{\circ} \mathrm{C}\) so it will fall in bothe cases
**NCERT-NLI-Exp**
TEST SERIES (PHYSICS FST)
266639
The blocks m , and \(\mathrm{m}_2\) are placed as shown in figure. A force \(\vec{F}\) is applied on block \(m_1\). Then which of following is correct
1 both \(\mathrm{m}_1\) and \(\mathrm{m}_2\) may remain at rest
2 both \(\mathrm{m}_1\) and \(\mathrm{m}_2\) will move with same acceleration
3 \(\mathrm{m}_1\) and \(\mathrm{m}_2\) will move with different accelerations
266612
The Young's modulus of a wire is numerically equal to the stress which will:
1 Not change the length of the wire
2 Double the length of the wire
3 Increase the length by \(50 \%\)
4 Change the area of cross-section of the wire to half
Explanation:
b Double the length of the wire
**NCERT-XI-II-169**
TEST SERIES (PHYSICS FST)
266636
A body of mass ' \(m\) ' is lifted from surface of earth to altitude \(h\). The increase in gravitational P.E. of the body will be:
1 \(\frac{m g h R}{h+R}\)
2 mgh approximately if \(h<
3 Both 1 and 2
4 None of the above
Explanation:
c
**NCERT-284**
TEST SERIES (PHYSICS FST)
266637
The quantity of heat which can rise the temperature of x gm of a substance through \(\mathrm{t}_1{ }^{\circ} \mathrm{C}\) can rise the temperature of ygm of water throguh \(t_2{ }^{\circ} \mathrm{C}\) is same. The ratio of specific heats of the substances is :-
1 \(\frac{y t_1}{x t_2}\)
2 \(\frac{x t_2}{y t_1}\)
3 \(\frac{y t_2}{x t_1}\)
4 \(\frac{\mathrm{xt}_2}{\mathrm{yt}}\)
Explanation:
c \[ \begin{aligned} & x c_1 t_1=y c_2 t_2 \\ & \frac{c_1}{c_2}=\frac{y t_2}{x t_1} \end{aligned} \]
**NCERT-282**
TEST SERIES (PHYSICS FST)
266638
A cup is full of water at \(4^{\circ} \mathrm{C}\) water will overflow from the cup if.
1 temp. is increased slightly
2 temp is decreased slightly
3 In both 1 and 2
4 none, water will not overflow
Explanation:
c kalume of water is minimum at \(4^{\circ} \mathrm{C}\) so it will fall in bothe cases
**NCERT-NLI-Exp**
TEST SERIES (PHYSICS FST)
266639
The blocks m , and \(\mathrm{m}_2\) are placed as shown in figure. A force \(\vec{F}\) is applied on block \(m_1\). Then which of following is correct
1 both \(\mathrm{m}_1\) and \(\mathrm{m}_2\) may remain at rest
2 both \(\mathrm{m}_1\) and \(\mathrm{m}_2\) will move with same acceleration
3 \(\mathrm{m}_1\) and \(\mathrm{m}_2\) will move with different accelerations
266612
The Young's modulus of a wire is numerically equal to the stress which will:
1 Not change the length of the wire
2 Double the length of the wire
3 Increase the length by \(50 \%\)
4 Change the area of cross-section of the wire to half
Explanation:
b Double the length of the wire
**NCERT-XI-II-169**
TEST SERIES (PHYSICS FST)
266636
A body of mass ' \(m\) ' is lifted from surface of earth to altitude \(h\). The increase in gravitational P.E. of the body will be:
1 \(\frac{m g h R}{h+R}\)
2 mgh approximately if \(h<
3 Both 1 and 2
4 None of the above
Explanation:
c
**NCERT-284**
TEST SERIES (PHYSICS FST)
266637
The quantity of heat which can rise the temperature of x gm of a substance through \(\mathrm{t}_1{ }^{\circ} \mathrm{C}\) can rise the temperature of ygm of water throguh \(t_2{ }^{\circ} \mathrm{C}\) is same. The ratio of specific heats of the substances is :-
1 \(\frac{y t_1}{x t_2}\)
2 \(\frac{x t_2}{y t_1}\)
3 \(\frac{y t_2}{x t_1}\)
4 \(\frac{\mathrm{xt}_2}{\mathrm{yt}}\)
Explanation:
c \[ \begin{aligned} & x c_1 t_1=y c_2 t_2 \\ & \frac{c_1}{c_2}=\frac{y t_2}{x t_1} \end{aligned} \]
**NCERT-282**
TEST SERIES (PHYSICS FST)
266638
A cup is full of water at \(4^{\circ} \mathrm{C}\) water will overflow from the cup if.
1 temp. is increased slightly
2 temp is decreased slightly
3 In both 1 and 2
4 none, water will not overflow
Explanation:
c kalume of water is minimum at \(4^{\circ} \mathrm{C}\) so it will fall in bothe cases
**NCERT-NLI-Exp**
TEST SERIES (PHYSICS FST)
266639
The blocks m , and \(\mathrm{m}_2\) are placed as shown in figure. A force \(\vec{F}\) is applied on block \(m_1\). Then which of following is correct
1 both \(\mathrm{m}_1\) and \(\mathrm{m}_2\) may remain at rest
2 both \(\mathrm{m}_1\) and \(\mathrm{m}_2\) will move with same acceleration
3 \(\mathrm{m}_1\) and \(\mathrm{m}_2\) will move with different accelerations
266612
The Young's modulus of a wire is numerically equal to the stress which will:
1 Not change the length of the wire
2 Double the length of the wire
3 Increase the length by \(50 \%\)
4 Change the area of cross-section of the wire to half
Explanation:
b Double the length of the wire
**NCERT-XI-II-169**
TEST SERIES (PHYSICS FST)
266636
A body of mass ' \(m\) ' is lifted from surface of earth to altitude \(h\). The increase in gravitational P.E. of the body will be:
1 \(\frac{m g h R}{h+R}\)
2 mgh approximately if \(h<
3 Both 1 and 2
4 None of the above
Explanation:
c
**NCERT-284**
TEST SERIES (PHYSICS FST)
266637
The quantity of heat which can rise the temperature of x gm of a substance through \(\mathrm{t}_1{ }^{\circ} \mathrm{C}\) can rise the temperature of ygm of water throguh \(t_2{ }^{\circ} \mathrm{C}\) is same. The ratio of specific heats of the substances is :-
1 \(\frac{y t_1}{x t_2}\)
2 \(\frac{x t_2}{y t_1}\)
3 \(\frac{y t_2}{x t_1}\)
4 \(\frac{\mathrm{xt}_2}{\mathrm{yt}}\)
Explanation:
c \[ \begin{aligned} & x c_1 t_1=y c_2 t_2 \\ & \frac{c_1}{c_2}=\frac{y t_2}{x t_1} \end{aligned} \]
**NCERT-282**
TEST SERIES (PHYSICS FST)
266638
A cup is full of water at \(4^{\circ} \mathrm{C}\) water will overflow from the cup if.
1 temp. is increased slightly
2 temp is decreased slightly
3 In both 1 and 2
4 none, water will not overflow
Explanation:
c kalume of water is minimum at \(4^{\circ} \mathrm{C}\) so it will fall in bothe cases
**NCERT-NLI-Exp**
TEST SERIES (PHYSICS FST)
266639
The blocks m , and \(\mathrm{m}_2\) are placed as shown in figure. A force \(\vec{F}\) is applied on block \(m_1\). Then which of following is correct
1 both \(\mathrm{m}_1\) and \(\mathrm{m}_2\) may remain at rest
2 both \(\mathrm{m}_1\) and \(\mathrm{m}_2\) will move with same acceleration
3 \(\mathrm{m}_1\) and \(\mathrm{m}_2\) will move with different accelerations
