Physics-

General

Easy

Question

# If the string is pulled down with a force of 120 N as shown in the figure, then the acceleration of 8 kg block would

- 10 m/
- 5 m/
- 0 m/
- 4 m/

## The correct answer is: 5 m/

### Related Questions to study

physics-

### With what acceleration ‘a’ shown the elevator descends so that the block of mass M exerts a force of on the weighing machine? [g = acceleration due to gravity]

### With what acceleration ‘a’ shown the elevator descends so that the block of mass M exerts a force of on the weighing machine? [g = acceleration due to gravity]

physics-General

physics-

### An astronaut accidentally gets separated out of his small spaceship accelerating in inter-stellar space at a constant acceleration of 10 m/ . What is the acceleration of the astronaut at the instant he is outside the spaceship ?

When the astronaut is outside the spaceship, the net external force (except negligible gravitational force due to spaceship) is zero as he is isolated from all interactions.

### An astronaut accidentally gets separated out of his small spaceship accelerating in inter-stellar space at a constant acceleration of 10 m/ . What is the acceleration of the astronaut at the instant he is outside the spaceship ?

physics-General

When the astronaut is outside the spaceship, the net external force (except negligible gravitational force due to spaceship) is zero as he is isolated from all interactions.

physics-

### The two diodes A and B are biased as shown, then

### The two diodes A and B are biased as shown, then

physics-General

physics-

### The value of current in the following diagram will be:

### The value of current in the following diagram will be:

physics-General

physics-

### The value of current in the adjoining diagram will be:

### The value of current in the adjoining diagram will be:

physics-General

physics-

### A semiconductor P-N junction is to be forward biased with a battery of e.m.f. 1.5 Volt. If a potential difference of 0.5V appears on the junction which does not depend on current and on passing 10mA current through the junction there occurs huge Joule loss, then to use the junction at 5mA current, the resistance required to be connected in its series will be:

### A semiconductor P-N junction is to be forward biased with a battery of e.m.f. 1.5 Volt. If a potential difference of 0.5V appears on the junction which does not depend on current and on passing 10mA current through the junction there occurs huge Joule loss, then to use the junction at 5mA current, the resistance required to be connected in its series will be:

physics-General

maths-

(Where [ ] denotes GIF) is equal to

(Where [ ] denotes GIF) is equal to

maths-General

physics-

### In Find the maximum angle of deviation for a prism with angle and = 1.5, If a constant magnetic field of strength T is applied parallel to the metal surface, then the radius of the largest circular path followed by the electrons will be :

Radius of largest circular path followed by the electrons

= 0.04 m

= 0.04 m

### In Find the maximum angle of deviation for a prism with angle and = 1.5, If a constant magnetic field of strength T is applied parallel to the metal surface, then the radius of the largest circular path followed by the electrons will be :

physics-General

Radius of largest circular path followed by the electrons

= 0.04 m

= 0.04 m

maths-

### A quadratic equation f(x) = ax^{2 }+ bx + c = 0 has positive distinct roots reciprocal of each other .Which one is correct ?

### A quadratic equation f(x) = ax^{2 }+ bx + c = 0 has positive distinct roots reciprocal of each other .Which one is correct ?

maths-General

physics-

### The sun deliverse of electromagnetic flux to the earth's surface. The total power that is incident on a roof of dimensions 8m ,20m, will be:

### The sun deliverse of electromagnetic flux to the earth's surface. The total power that is incident on a roof of dimensions 8m ,20m, will be:

physics-General

maths-

### If are the eccentric angles of the extremities of a focal chord of the ellipse , then tan

The equation of the ellipse is of the form

the eccentricity e = =.

Let P(4 cos , 3 sin ) and Q (4 cos , 3 sin ) be a focal chord of the ellipse passing through the focus at (, 0).

Then =

=

=

tan tan = = .

the eccentricity e = =.

Let P(4 cos , 3 sin ) and Q (4 cos , 3 sin ) be a focal chord of the ellipse passing through the focus at (, 0).

Then =

=

=

tan tan = = .

### If are the eccentric angles of the extremities of a focal chord of the ellipse , then tan

maths-General

The equation of the ellipse is of the form

the eccentricity e = =.

Let P(4 cos , 3 sin ) and Q (4 cos , 3 sin ) be a focal chord of the ellipse passing through the focus at (, 0).

Then =

=

=

tan tan = = .

the eccentricity e = =.

Let P(4 cos , 3 sin ) and Q (4 cos , 3 sin ) be a focal chord of the ellipse passing through the focus at (, 0).

Then =

=

=

tan tan = = .

maths-

### If P(), Q are points on ellipse and is angle between normals at P and Q then -

### If P(), Q are points on ellipse and is angle between normals at P and Q then -

maths-General

physics-

### The Maxwell's four equations are written as:

i)

ii)

iii)

iv)

The equations which have sources of and

### The Maxwell's four equations are written as:

i)

ii)

iii)

iv)

The equations which have sources of and

physics-General

Maths-

### The line x cos + y sin = p touches the ellipse , if :

### The line x cos + y sin = p touches the ellipse , if :

Maths-General

maths-

### If and are the eccentric angles of extremities of a focal chord of an ellipse, then the eccentricity of the ellipse is -

Equation of chord be

cos + sin = cos

since it passes through (ae, 0)

so e cos = cos

e = =

e =

cos + sin = cos

since it passes through (ae, 0)

so e cos = cos

e = =

e =

### If and are the eccentric angles of extremities of a focal chord of an ellipse, then the eccentricity of the ellipse is -

maths-General

Equation of chord be

cos + sin = cos

since it passes through (ae, 0)

so e cos = cos

e = =

e =

cos + sin = cos

since it passes through (ae, 0)

so e cos = cos

e = =

e =